Our stay at Mercury Budapest Buda was really pleasant. Our room was tidy and comfy and everything worked well, even the hotel Wi-Fi! Before our trip we asked whether we could have a bed for two instead two beds for one, and the hotel worked that out!
The location of the hotel was really good: metro station was close and you could go to all the most important places fast and easy.
We had one problem though. Ten days after the trip, we still haven't got our deposit (we had to give a deposit to check-in) back, or any information about it. The deposit was one fifth of our travel budget, so we'd love to have it back.