Mattress Firm Southside Square logo

Mattress Firm Southside Square

Mattress Firm

Jacksonville, FL

4.8(610 reviews)
9 active offers6 store perks
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About Mattress Firm

Mattress Firm offers a wide selection of mattresses from top brands, including Tempur-Pedic, Purple, Sealy, and Sleepy's. They provide various promotions, such as the Memorial Day Sale with up to 60% off, and offer financing options like 0% interest with equal monthly payments on qualifying purchases. Customers can enjoy free and fast delivery, a low price guarantee, and a 120-night sleep trial. All mattresses are assembled in the U.S.

Current Promotions
Last updated Oct 23, 2026

Current homepage sales include up to $700 off, a free adjustable base with select mattresses, select price-point and bundle offers, clearance mattresses up to 70% off, $300 instant gifts, and an extra 15% off qualifying purchases.

  • Black Friday Sale: Save up to $700Expires: 2026-12-08Savings vary by product and model; valid only on models indicated; product selection may vary by store.
  • Free adjustable base with select mattressesSelect mattresses.
  • Queen beds under $500Queen beds.
  • Sleepy's By Sealy Spring Luna Euro Top mattress and adjustable base bundle
  • Any size for $249.99 on select mattressesSelect mattresses.
  • Up to 70% off select clearance mattressesSelect clearance mattresses; while supplies last.
  • $300 instant gift toward a total sleep solution
  • $300 instant gift on select Purple mattressesSelect Purple mattresses.
  • Get an extra 15% offQualifying purchase; available online or in-store.
Purchase Incentives
  • 0% interest with 72 equal monthly paymentsQualifying purchases with Mattress Firm credit card; subject to credit approval. For 60- and 72-month in-store purchases, taxes and delivery fees must be paid upfront.
  • Free and fast delivery
  • Free & Fast Delivery
  • Financing & Leasing
  • Low Price Guarantee
  • 120 Night Sleep Trial
Mattress Selection

Brands

Tempur-Pedic
Purple
Sealy
Sleepy's

Ideal for

teens
growing children
adults

Technology

memory foam
hybrid
innerspring

Assortment

Box Springs & Frames
Adjustable Bed Bases
Bedding
Furniture & More

Price range

$
$$
$$$
$$$$

Estimated price positioning for this store

What Your Neighbors Say

Real Google reviews from nearby shoppers

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Average rating 4.8 · 610 reviews

Last updated Sep 18, 2026

Shay Marie Taylor· 5★ · 2026-06-20T17:14:28.700969879Z

From the moment we walked in Ehson was extremely welcoming and professional. He walked us through the whole process, used our account to see our previous purchases, and gave me recommendations for my college bed that fit the criteria I was looking for. He also explained the care coverage to us super simply so we knew exactly how to get the best value. I highly recommend Ehson as your sleep expert to receive the most personalized and professional experience

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Frederick Brown· 5★ · 2026-07-06T00:10:25.660143417Z

We had a great experience at Mattress Firm! Carmen was amazing!! she was friendly, knowledgeable, and really took the time to help us find the right mattress. She also helped us get a great deal, which made the whole experience even better. We truly appreciate her patience and excellent customer service. Highly recommend asking for Carmen if you’re shopping for a new mattress!

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Laura S.· 5★ · 2026-07-08T23:10:03.657914659Z

We had to purchase a mattress and frame for my daughter and wanted to make sure we were getting her what she needed. Our sales rep Carmen was extremely professional, thorough, and responsive. She gave us her direct contact number, answered our many questions and worked through an inventory issue. Fernando, our delivery person, let us know we ordered a wrong part before we tried to make it work and took care of the return and credit. This was overall an exceptional retail experience.

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Paula Graves· 5★ · 2026-09-05T15:04:14.947465756Z

Bought a mattress today from your Southside store. I got an amazing deal and the manager Togo was the best. He was so helpful and personable. I would come back and shop with him again.

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Aimee Simmons· 5★ · 2026-05-06T15:59:29.467151419Z

We purchased a new mattress on 05/02 and had a great experience from start to finish. Our salesman, Brahim, was amazing—very knowledgeable, patient, and made the entire process smooth and stress-free. We originally went in for a specific mattress, but by the time we were ready to finalize, it had already been sold. In good faith, they honored the situation by giving us a better mattress for the same price, which we truly appreciated. Brahim’s professionalism and customer care really stood out, and we’re very happy with our purchase. Highly recommend working with him if you’re in the market for a new mattress!

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