If you are lucky enough to get to stay ata Callas, you would be a very lucky visitor of Budapest. Location is best the the office manager, Ms. Ildiko, was the most informative, helpful and kindest in my hundreds of overseas trips. We got to visit the best restaurant in the city and by passed the other tourist trap places thanks to her. Callas has best location with Opera House right next door where we got last minute tickets to see Figaro. You can walk everywhere with numerous dining venues and piers for tourist boats nearby. Hop On & Off bus stop is on the street, but we ne ver took it as Uber was reasonable & ready to go, so we didn't ahve to wait time walking and learning to take subways and buses in Hungarian language. There are only 28 rooms so book early. We ahve 2 roof top balconies from our 700 s.f. suite, so we couldn't have asked for a better room in town.