Hi SEBALAZS,
Welcome to the Mattress Forum!
I’m sorry to hear that your Saatva mattress isn’t working out well for you. Hopefully they were able to take care of things for you with a return/refund.
One thing you may wish to confirm is that you are using an appropriate foundation with a bed frame using a good center support (for full through king sizes) to make sure than those things are not contributing to you sinking in the middle of any mattress you may purchase.
You must have read about some of my general comments about hotel mattresses from post #2 here. I’m glad you were able to read through that information.
Yes, Yankee Mattress Factory is a member of this site which means that I think very highly of them and that I believe that they compete well with the best in the industry in terms of their quality, value, service, knowledge, and transparency. If you do decide to make a purchase from them, be sure to ask for your TMU discount!
Good luck! I’ll be interested in learning about your visit.
Phoenix