The northern wing sits on the remains of that monestary (named for St. Nicholas). 

The southern wing incorporates the facade of a 18th Century Jesuit’s College.

The building is quite typical of architecture in the 1970s and has its critics who believe that it is quite incongruous in such a prominent position, within a World Heriatage Site, adjacent to the spectacular Matthias Church.

The Hilton website says the hotel offers a wide variety of facilities to cater for business and recreational needs.  They explain that guests can, "Hold special events or meetings in one of 24 versatile meeting rooms for up to 660 Guests. Celebrate weddings on an open-air venue overlooking the city and relax while expert event planners take care of the details. Stay connected with WiFi throughout the hotel and catch up with work in the business center.  Re-energize in the 24-hour fitness center or keep fit on the jogging track. Luxuriate with a massage or unwind in the sauna. Marvel at ancient relics, situated in the hotel’s restored Dominican cloister. Lounge in the lobby bar and admire breathtaking views, or savor authentic Hungarian and Mediterranean flavors in ICON Restaurant."