Siena Memory Foam Mattress Review: Takes From Our Test Lab

“The Siena’s memory foam did a nice job of reducing pressure around my hips and shoulders when sleeping on my side, but it wasn’t as effective in other sleeping positions. The memory foam layer is also relatively thin, so it might lack pressure relief for people with a higher body weight.” – Logan

The 2-inch layer of memory foam in the Siena Mattress contours to the body, cushioning the heaviest areas. This helps relieve pressure, including around the hips and shoulders.

That said, sleepers over 230 pounds may find that the foam is too soft or too thin to properly cushion their body. Pressure relief from this mattress is also limited for back and stomach sleepers.

“Heat buildup was a real problem for me on this mattress. The hug of the memory foam seemed to cause heat to collect around me, and it was enough to interfere with my sleep.” – Brad

Our testers found that heat retention was a serious issue on the Siena Memory Foam Mattress. Even though it’s infused with gel beads, the memory foam collects heat. Its close contouring reduces airflow over the skin, making it harder for your body to cool itself down.

While this may not be an issue for people who run cold, it makes the Siena Mattress a poor fit for those who sleep hot.

“You’ll definitely notice the difference between sitting in the middle of this mattress and sitting on the edge. The foam compresses a lot, and while it wasn’t a big problem for me, it might feel unstable to some people.” – Jackson

The Siena Memory Foam Mattress offers average or just below-average edge support. You can feel the foam sink deeply around the perimeter, but it doesn’t completely give out beneath you.

Based on our testing team’s experience, the level of edge support is comparable to other low-cost memory foam mattresses. It may be a concern if you frequently sit on the edge of the bed, but it’s not a dealbreaker for most people.

“Along with heat retention, another downside of the hug of memory foam is how it can restrict motion. That was my experience on the Siena Memory Foam Mattress. While I was comfortable on my side, I felt like I was fighting the mattress when I wanted to adjust my posture.” – Brad

Changing sleeping positions can be tricky on the Siena Memory Foam Mattress. There’s almost no bounce, and the conforming foam can create a barrier to movement.

For some sleepers, this is a worthwhile tradeoff in order to get the pressure relief of memory foam. But restricted movement may be an issue for combination sleepers and anyone with strength or mobility issues.

“For about 48 hours, it was pretty clear that there was a new mattress in my bedroom. The foams give off a noticeable scent, but I turned on a fan, which seemed to help it dissipate.” – Logan

We found significant off-gassing from the Siena Mattress. This is normal for a mattress made entirely of foam, and it’s important to note that off-gassing likely doesn’t create any health risks. However, it does mean that there’s a noticeable smell that can last for a few days after you first set up the mattress.