On the roof Jonathan exclaims "Look at the view from here, you can almost see Budapest..." The film is set in Romania however, so perhaps he meant Bucharest, more likely to be spotted from a high point in Transylvania. However, Budapest (capital of Hungary) is not much further away from Transylvania and and as Transylvania used to be part of Hungary (more precisely the Austro-Hungarian Empire) at the time the original Stoker novel was written, Jonathan might as well mean Budapest, indeed.
Incorrectly regarded as goofs
(at around 1h 19 mins) After Dracula chases the plane with Johnny on it, he crashes into Mavis' room and returns to his human form. When he appears through the smoke, his face is sunburned and there are holes burnt in his cape. In the very next shot, his skin is its usual pale white color and his cape is intact. What actually happens is that his cape, clothes and skin can be seen repairing themselves.
As Dracula heads up to Mavis' room at the beginning of the movie, he passes by a number of other hotel rooms. The last door he passes, the witch/maid greets him, and the head says, "Maid, clean up this room!" You can see the number plate on this door, room #174. Later, after Mavis' "trip", Dracula approaches her door, and we can see the number plate, room #174.