We had not many choices : all the hotels were full. The Belvedere though very ugly from the outside is a very confortable place. The rooms are OK (nothing fancy) even if not exactly new, the breakfast was excellent with a large buffet and the bar downstairs a nice place to have a drink after a long and hard day walking in the city of Prague.
A nice basic hotel in Praha 7 area (on the other side of the river). Nice, clean place but a bit boring breakfast ;) Ideal for us who just go to hotel to take a shower & sleep.