Best mattress for a guest room (and sofa beds, daybeds and trundles)
Hi, we’re John and Mimi. A guest room mattress has a funny job: it sits empty most of the year, then has to make everyone happy, from your mom to your college friend to the grandkids. You don’t need the thickest or priciest bed for that. You need the right size for the room, a feel most people like, and a little care so it’s fresh when company comes. Here’s how we’d choose, which of our mattresses we’d put in a spare room, and today’s prices: same factory models, lower price than other online retailers.
The short answer
- Thickness: 8" to 10" is the sweet spot for a guest bed. A 6" works for trundles, sofa beds and low-profile spots, and 10" is the better choice if adults stay often or for more than a weekend.
- Feel: medium to medium firm. You can’t know who will sleep on it, so pick the middle of the firmness scale that suits the most people.
- Size: a full fits most spare rooms and works for one adult or a couple for a short stay. A queen is the better fit if couples visit often and the room allows. A twin or Twin XL suits a small room or home office.
- Budget: a guest bed gets a fraction of the use of your own bed, so a budget all-foam mattress makes sense.
- Always add a protector, because liquid spills aren’t covered by the mattress warranty, and it keeps dust off between visits.
Pick by room and guest
| Situation | Size | Thickness and feel | Our picks |
|---|---|---|---|
| Spare bedroom, mixed guests | Full or queen | 10", medium to medium firm | 10" Gel Comfort Reactive, 10" Rose Medium |
| Couples visit often | Queen | 10", medium to medium firm | 10" Gel Comfort Reactive, 10" Rose Medium |
| Occasional guests, tight budget | Full | 8", firm | 8" Gel Comfort Reactive, 8" Daisy Firm |
| Small room or home office | Twin or Twin XL | 8" to 10" | 8" Daisy Firm, 10" Rose Medium |
| Grandkids and sleepovers | Twin, or two twins | 6" to 8", firm | See our best mattress for kids guide |
| Daybed or trundle | Usually twin | What the frame allows, often 6" to 8" | See our bunk bed, trundle and daybed guide |
| Sofa bed | Measure first (see below) | Thin and flexible | 6" Essentials Firm, if it fits |
What size mattress for a guest room?
- Full (54" × 75"): the classic guest bed. It fits most spare rooms, gives one adult plenty of room, and works for a couple for a few nights. It’s the same 75" length as a twin, so very tall guests may find it short.
- Queen (60" × 80"): 6" wider and 5" longer. If couples or tall guests visit often and the room has space, a queen is the more comfortable choice, and queen sheets are easy to find.
- Twin or Twin XL (both 38" wide): best for a small room or a home office that doubles as a guest room. A Twin XL is 80" long, so it suits taller adults.
- Two Twin XLs side by side make a 76" × 80" king-size surface, the same footprint as a split king. Push them together for a couple, or split them apart for two friends or siblings who don’t want to share. You’ll need a king frame or two Twin XL frames.
Every measurement is in our mattress size chart. Torn between the two most popular guest sizes? Our full vs queen guide shows how much room each one needs, and the twin vs Twin XL guide covers the smaller sizes.
How thick should a guest mattress be?
Thinner and simpler than your own bed is fine. For a room that gets a few visits a year, 8" is a comfortable, budget-friendly choice. If adults stay often, for a week at a time, or a heavier guest uses the room, step up to 10" for more cushion; a 6" mattress can feel thin to some adults as an every-night bed. Save 6" for trundles, sofa beds and other spots that need a low profile. The full 6" to 14" range is in our mattress thickness guide.
Which firmness suits the most guests?
Medium to medium firm. Side sleepers usually want a little more cushion and stomach sleepers a little more support, and the middle of the scale is the best compromise when you don’t know who’s coming. A firm 8" is still a fine budget pick if your guests are mostly kids or back and stomach sleepers. Our mattress firmness guide explains the whole scale.
Sofa beds: measure before you buy
We don’t sell mattresses made specially for pull-out sleeper sofas, so here’s our honest advice. Sleeper sofas vary a lot, and many use a mattress that isn’t the same size as a standard bed mattress, so a standard mattress may not fit.
- Measure the old mattress (length, width and thickness) and check the sofa maker’s label or manual for the size and maximum thickness it takes.
- Our 6" Essentials Firm is our only mattress whose description lists use in most sofa-bed furniture, and trundle beds. It comes in standard bed sizes (the table below shows which are in stock today), so it only fits a sleeper built for a standard size, such as a full (54" × 75") or queen (60" × 80").
- Folding is the catch. Our care instructions say not to fold or bend a mattress for long periods. If your sleeper folds the mattress up inside the couch every day, a mattress made for that sofa is the safer bet. A frame where the mattress stays flat, like a daybed or futon-style platform, is a better match for ours.
- Not sure? Text John the measurements and a photo of the frame, and he’ll tell you honestly whether it will work.
Daybeds and trundles
A daybed is usually a twin that works as a sofa during the day, and a trundle is a second twin that rolls out from under it, so both have their own thickness limits. Our bunk bed, trundle and daybed guide explains how to measure a trundle and what thickness looks best on a daybed.
Guest mattress prices today
Our best guest-room mattresses in twin, full and queen, at today’s prices. A dash means that size isn’t available right now.
| Pick | Best for | Model code | Twin | Full | Queen |
|---|---|---|---|---|---|
| 10" Gel Comfort Reactive | Medium firm crowd-pleaser for adult guests | 10ESSCA-T |
$329 | $379 | $389 |
| 10" Rose Medium | Medium feel with a washable zip-off cover | 10BNV-T |
$329 | $399 | $429 |
| 8" Gel Comfort Reactive | Budget pick for occasional guests | 8ESSCA-T |
$292 | $329 | $349 |
| 8" Daisy Firm | Firm budget bed, kids and small rooms | 8BNV-T |
$309 | $359 | $389 |
| 6" Essentials Firm | Sofa beds, trundles and low-profile spots | 6ESS-T |
— | $289 | $299 |
Prices are today’s prices, read live from our catalog, with free FedEx shipping included.
Compare every model side by side in the mattress comparison chart.
10" Gel Infused Comfort Reactive Memory Foam Mattress - Medium Firm, Back & Side Sleepers
Our pick for most guest rooms. A 10" medium firm mattress that suits a wide range of sleepers, at a budget price.
- Gel-infused air memory foam over an Air Channel base foam
- Quilted mattress cover
- CertiPUR-US certified foams
- Works with an adjustable base (sold separately)
From $329 (Twin) · Queen $389 · See sizes & details
6” Essentials Firm Memory Foam Mattress - 6ESS
Our pick for sofa beds, trundles and tight spots. A 6" low-profile mattress; measure your frame first.
- Description lists use in most sofa-bed furniture and as a trundle bed
- 1" gel-infused memory foam, 2" ridge foam, 3" ridge base foam
- Zip-off, machine-washable cooling cover
- CertiPUR-US certified foams
From $289 (Full) · Queen $299 · See sizes & details
Mattress in a box: setup and storage tips
- Unbox it where it will live. Our mattresses arrive compressed and rolled. Once one expands it won’t go back in the box, so carry the box to the guest room first.
- Don’t leave it boxed for months. If you’re buying ahead of a visit, unbox it within a few days of delivery rather than storing it rolled up in the garage. It can take up to 72 hours to fully recover its shape, so set it up at least a few days before guests arrive. More in our mattress-in-a-box guide.
- Check what’s underneath. The setup instructions call for a solid surface, an adjustable base, or slats no more than 2" apart. An old box spring or frame with wide gaps between slats may need a bunkie board or plywood on top.
- Cut the plastic with scissors, never a razor blade, so you don’t nick the cover.
Caring for a mattress that’s rarely used
- Keep a protector on it all the time, not just when guests are coming. Our Terry Cloth protector is listed as guarding against liquid spills, dust mites, allergens and pet dander, and fits mattresses up to 11" thick.
- Rotate it head to foot every few months, as the care instructions suggest, so the same spot doesn’t take all the wear.
- Air the room out before a visit: strip the bed, open a window and let the mattress breathe for a few hours. Keep it dry; the care instructions say not to let moisture soak into the mattress.
- Wash the cover when needed. The 6" Essentials Firm, 8" Daisy Firm and 10" Rose have zip-off, machine-washable covers: cold, gentle cycle, air dry without heat.
- Don’t use it as a shelf. Stacking boxes or suitcases on a spare bed for months can leave dents in foam, and the care instructions also say not to stand or jump on it.
- It should last for years. A guest bed gets far less use than your own; our how long does a mattress last guide lists the signs it’s time to replace one.
Shop this guide
For most spare rooms, start with the 10" Gel Comfort Reactive or 10" Rose in a full or queen, and add a protector from day one.
- 10" Gel Infused Comfort Reactive Memory Foam Mattress - Medium Firm, Back & Side Sleepers, from $329. Medium firm 10" mattress that suits most guests.
- 10" Rose - Medium Firmness - 10BNV, from $329. Medium 10" mattress with a washable zip-off cover.
- Terry Cloth Mattress Protector - MATPROC1, from $31. Guards against spills and dust between visits; fits up to 11".
Questions we hear a lot
What is the best mattress for a guest room?
For most spare rooms, an 8 to 10 inch all-foam mattress with a medium to medium firm feel. You can’t know who will sleep on it, so the middle of the firmness scale suits the most people, and a guest bed gets far less use than your own, so a budget mattress makes sense. Our 10 inch Gel Comfort Reactive and 10 inch Rose are our usual picks.
Should a guest bed be a full or a queen?
A full (54 by 75 inches) fits most spare rooms and works for one adult or a couple for a short stay. If couples or tall guests visit often and the room has space, a queen (60 by 80 inches) is more comfortable. For a small room or home office, a twin or Twin XL saves floor space.
How thick should a guest room mattress be?
About 8 inches for a room that gets a few visits a year, and 10 inches if adults stay often or for longer visits. A 6 inch mattress is best for trundles, sofa beds and other spots that need a low profile.
Can I put a regular mattress on a sofa bed?
Only if it fits. Many sleeper sofas take a mattress that isn’t a standard bed size, so measure the old one and check the sofa maker’s label. Our 6 inch Essentials Firm lists use in most sofa-bed furniture, but our care instructions say not to fold or bend a mattress for long periods, so a sleeper that folds the mattress inside the couch every day may need a mattress made for that sofa.
How do I take care of a mattress that is rarely used?
Keep a mattress protector on it all the time, rotate it head to foot every few months, keep it dry and air the room out before guests arrive. Don’t store boxes or suitcases on it, since weight left for months can dent foam. Questions? Text John at 805-617-6878.
Still deciding? Just ask us
Tell John the room size, who usually visits and what frame the mattress will sit on (with measurements if it’s a sofa bed, daybed or trundle), and he’ll tell you honestly which mattress fits. Text or call 805-617-6878, 6 AM to 9 PM Pacific, take the 60-second mattress quiz, or use Help me choose. See our Purchase Policy & Warranty for the details.
Written by John & Mimi Venti, MimiJohn. Specs from the manufacturer; prices update automatically. General shopping advice; for sofa beds, daybeds and trundles, follow your frame’s own label and instructions.