Stayed in this one last Feb, although it was called something else then ( can't remember the name) but I notice it's having some renovations carried out.
http://www.easyjethotels.net/info_hotel.jsp?indiceGP=7
In the main shopping area of Pest walking distance to the metro, 2 min walk to the Danube.All round excellent hotel, we were there for 4 nights.
Enjoy