Storing a mattress is a nightmare, yet your guests still need a place to sleep. Many owners hate the bulky footprint of spare bedding. I have researched these Costco options to see which holds up best. I think the difference in height is the deciding factor for comfort. Let’s see which foldable solution is actually worth your floor space.
| Best For | Product | Name | Score | |
|---|---|---|---|---|
| Guest Room Comfort |  |
MLILY Trifold Memory Foam Mattress, 6 inch Queen Foldable Mattress | 9.8/10 | View on Amazon |
| Compact Floor Storage | |
MLILY Single Trifold Mattress, 4 Inch Foldable Gel Memory Foam Mattress | 8.2/10 | View on Amazon |
1. MLILY Trifold Memory Foam Mattress, 6 inch Queen Foldable Mattress
This mattress earns the top spot because the 6-inch profile provides a buffer that thinner pads simply cannot match. It feels substantial enough to keep you off the hard floor, which is the most common grievance with portable bedding.
In my view, this is the superior choice for a dedicated guest room setup. It offers a more traditional sleeping feel, though the seams between the foam sections can be noticeable if you move around frequently during the night.
Buyers frequently appreciate the generous queen size for accommodating two guests comfortably.
The additional thickness is widely cited as the main reason for its superior comfort rating.
Most feedback suggests it stores easily despite the larger dimensions when unfolded.
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2. MLILY Single Trifold Mattress, 4 Inch Foldable Gel Memory Foam Mattress
This model is ideal for the minimalist buyer who needs a compact sleep surface for a home office, a dorm, or occasional floor sleeping. Its smaller footprint allows it to slide into tight closets or under a desk without much effort.
I find the gel-infused foam a smart touch for temperature regulation, even if the 4-inch depth is on the thinner side. You should prioritize this if your storage space is limited, but don't expect it to replace a primary mattress.
Users often report that the gel layer prevents the heat retention common in standard foam.
Its portability is the most praised feature for those moving it between rooms.
The primary limitation noted is that the thinner profile may allow you to feel the floor through the mattress.
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Choosing Between Them
I recommend the MLILY 6-inch Queen for anyone prioritizing guest comfort, while the MLILY 4-inch Single is the better tool for those constrained by limited storage space. Choosing between these comes down to how much room you have to spare versus how much cushioning depth you require for a good night's rest.
The MLILY 6-inch Queen takes the lead because the extra two inches of depth provide a cushioning barrier against hard floors, though keep in mind that foldable foam often lacks the firm edge support found in traditional mattresses. If you choose the thinner model, expect a compromise on plushness in exchange for a much smaller footprint.
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