I like the mattress a lot. It is a little firm, but supportive. Right now I feel I'm still in the trial period and don't have a final verdict yet :) In general, though, I would recommend Tuft & Needle to friends with some caveat (on the firmness).
One odd thing: the first 4-5 nights on the mattress, I woke up dizzy, (like room-spinning, vertigo dizzy). First morning was pretty bad and lasted all day, but it gradually lessened over time. I think it might be some off-gassing issue? It didn't affect my husband, however.
As of right now, the bed is too soft and squishy in our opinion. I also feel every movement my husband makes. We plan on giving it more time in hopes that it gets better.