I've been in Polonia Palace Hotel in December 2011 and I felt great. When arriving you find out an hall american way :) The room was large, clean and everything was absolutly fine. The staff was very nice and helpful. Everytime I needed something they were absolutly great. It's my 2nd favourite hotel in Warszawa (after the Intercontinental, 200meters faraway on the other side of the square). I don't agree with people telling that it's too far from town center. It takes 5 minutes by foot to go to Nowy Swyat. If not you can go by public transportation (in Warszawa it works great all day and night long). Even if there're a lot of people rooms are very silent and warm (I was there in December). I've not been having breakfast in the morning so I can't comment. In general people staying at the Polonia Palace are in Warsazwa for business so mainly I think it's for business traveller. Anyway only positive aspects. Suggested!