Siena 8 Full Mattress with Adjustable Base - Medium Firm Comfort

Our review of the Siena 8 Full Mattress with Adjustable Base finds it best for sleepers who want the versatility of head and foot incline combined with pressure-relieving foam that still feels supportive. The single biggest reason to consider this set is the adjustable comfort system paired with a medium-firm gel memory foam core that balances spinal support and pressure relief; it works well for back sleepers and couples using a split configuration. Assembly and trial terms make it an easy risk-managed upgrade for anyone replacing an older mattress.

Key Features

• Adjustable comfort: Independent head and foot elevation lets sleepers create specific positions for reading, watching TV, or easing reflux and snoring.
• Medium firm feel: The mattress layer set is designed to offer a blend of responsiveness and pressure relief that supports spinal alignment for many body types.
• Wireless remote with memory: The included remote stores custom positions so couples can recall preferred settings without fuss.
• Zero clearance frame: A low-profile metal frame fits on a platform or the floor and keeps mechanics contained, while supporting up to 850 lbs distributed across sections.
• 180-night home trial and warranty: The mattress itself includes a 180-night trial and a 10 year manufacturer warranty for peace of mind; the adjustable base carries a 2 year warranty.
• Four comfort layers: Multiple foam layers, including a gel memory layer, aim to reduce motion transfer and relieve pressure for sleepers who share a bed.

Who It's For

The Siena 8 Full Mattress with Adjustable Base is ideal for couples who want independent side adjustments when configured as a split king, people who need head and foot elevation for health or comfort reasons, and anyone seeking a medium-firm foam mattress that reduces pressure points. It also suits buyers who prefer minimal setup since the base needs no tools and the mattress expands in place.

It is less well suited for those who prefer an ultra-plush or very firm innerspring feel, or shoppers who require advanced smart-home integrations beyond a simple wireless remote. Also, sleepers who want a mattress with a long, separate warranty on the base should note the base has a two year warranty only.

Pros & Cons

Pros

• Adjustable head and foot incline customizes comfort for sleep and daytime activities.
• Medium firm gel memory foam offers a supportive balance and reduces motion transfer.
• Zero clearance metal frame fits existing platform beds and supports heavy distributed loads.
• Strong value with a 180-night mattress trial and a 10 year mattress warranty.

Cons

• Some shoppers report the mattress firmness feels slightly softer than expected, so firmness is mixed across users.
• The adjustable base warranty is limited to two years, shorter than the mattress warranty.

Specifications

Our Verdict

The Siena 8 Full Mattress with Adjustable Base is a strong choice for sleepers who want adjustable head and foot positions plus a medium-firm gel memory foam feel that balances support and pressure relief. With an easy assembly, a lengthy mattress trial, and a solid warranty, it delivers good value for buyers replacing a conventional mattress or seeking personalized comfort without a high price tag.

Frequently Asked Questions

Can the adjustable base be used on a platform frame?
Yes, the zero clearance design means the frame fits on most platform frames or directly on the floor without mechanics extending beyond the frame.

How long before the mattress reaches full expansion?
The mattress expands after unboxing and is generally ready to sleep on within 24 hours.

Does the Split King option allow independent control for each side?
Yes, a Split King uses two Twin XL bases so each sleeper can adjust their side independently or synchronize them as needed.