The hotel temporarily disappeared from Marriott searches because they bizarrely changed the location to somewhere in Croatia. It's been fixed.

I can reiterate what others have posted about. This is a great value stay in Warsaw. Breakfast and the room upgrade were great (Platinum status). I'd just recommend avoiding the cash machine by the elevators, it'll charge you a transaction fee, give you a terrible exchange rate, and take an extra % off the top as a secondary fee. Keep 20+% of your money and walk to a bank ATM. Or don't bother, I haven't needed cash anywhere as of yet.