I wonder if you called Holiday Inn if they would share the info with you.

Early in our marriage we had a traditional coil mattress on a box platform DH built (not a slat platform) and there was no motion transfer at all. Many years and beds later we now have a hybrid coil/memory foam mattress on slim box springs that sit on slats supported by the side rails of our huge heavy bed. There is some motion transfer if one of us is really tossing but it's minimal. Looks like Holiday Inn uses Tempur Sealy mattresses that are made for them but available to the public.

We loved our first Sleep Number (then Select Comfort) so much we bought a new one a few years ago. Too bad we only got 24 years out of the first one!

Donna

We have an iron bed too. Then a Sealy Posturepedic mattress, about 4 years old. I'm not sure it's as stable as you described. We just don't move that much.

We love our natural latex mattress.

Maire Cate, I love Charles Roger products. We have a few lamps and they are exceptionally made.

Motion transfer likely comes from the mattress, but whole bed shaking sounds like a loose or too lightweight frame. Tempur Sealy and Leggett and Platt make many of the mattresses out there, even ones sold under different names. I found out L&P makes at least the upper end Leesa hybrids.

You mention mattresses and frames -- make sure you include the proper foundation in your equation. While dealing with a string of defective and unpaired (TXL) mattresses, we had mattresses on a foundation and not at times. It really does make a difference how the mattress feels and would impact that motion transfer as well.

The condo iron bedframe sounds like maybe it was poor quality or loose. We have a really sturdy wood Restoration Hardware sleigh bed and the frame definitely doesn't move. If my husband flops around too aggressively (he struggles to sleep sometimes) the movement does jostle me, but I'm fairly certain it's transferring through the mattress and/or the box spring. I do think a very solid frame would help from the whole bed shifting. I think when we had a basic cheapo metal frame with wheels, the bed would sometimes move especially if my husband plopped down onto the bed.

@lascatx What did you think worked the best-box springs or not?

We have a Sleep Number store close by so I will run past there to check out their items. They have a bed frame that does not look to bad, beige/grey fabric, clean looking legs, high enough it appears for Roomba to get under. I am not interested in an iron bed, was just pointing out that there was a lot movement in that bed we slept in.

In the last six months, I have slept on mattresses on box springs, adjustable foundations (2 different brands), another mattress and the floor. It's a long story, but for a mattress you want to keep, just make sure you have a foundation that is recommended for the type of mattress you have.

As an example. our Leesa hybrid is not to be used with a traditional box spring. A lot of the foam and hybrids cannot be used on a box spring. They specify a minimum width and number of spats or a solid foundation (platform or adjustable base). You don't want less support because the base of the mattress could sag between slats -- potentially damaging the mattress and changing the feel of it. And it won't be covered by warranty.

When you try a mattress, it will probably be on either a paired foundation or an adjustable base. If the mattress is on a paired box spring, you might notice a slightly firmer or less shifty feel with a platform or adjustable base, but unless you compare the two side by side, it may not be noticeable. The main thing is just to make sure you have a good pairing - check what the mattress manufacturer requires.