Excellent location. Hata is very nice and friendly. The shared bathroom wasn't an issue for us, though we should probably specify that it's more like a private part of the flat than the full flat itself since Hata is living in the room next to the main entrance. Anyway, absolutely no worries, she's amazing and the area is very pleasant. 3min by foot from Charles bridge and next to many restaurants (try the tri stoletti, incredible place)!
In front of a beautiful big and romantic parc, it's incredibly attractive!