First of all I want to thank all the staff especially Miclosh, Zoltan and Alexandra, they are doing all the best to help you with whatever you need.
Corvinus is located 10 min. walk from Museums Quarter and near Neubaugasse metro station, there is a signboard on a building, so no problem to find him. Its a small, cozy hotel and located in just one of the floors, but despite of this my room was pretty big (single), very clean (cleaned every day). The breakfast was varied and tasty: eggs, cheese, salami, salads, olives, yogurts and many more...Also the staff is making for you coffee or tea every breakfast.
Definitely one of the best hotels I've stayed in.