Novotel Budapest Centrum definitely gives you good value for money! Friendly and professional staff, clean rooms, great variety of breakfast and good location close to the city centre. Metro and tram stops are just outside the front door of the hotel.
We stayed in a familiy room with reasonable space for 4 people and got extra towels delivered right away when we asked for allowance to bring the hotel towels to an outdoor spa. Tip: Ask for a quiet room if you want to avoid trafic noise from the street.