Perfect location. In the very center of the city. Schubert was walking those stairs and lived in that walls. It was my business trip. At that price it was not easy to find an apartment in the center before Christmas. So I saved money and time. Close to the subway, supermarket.
My travel goals did not require any special accommodation except "where to sleep, where to take shower, dry my hair, iron clothes". So I liked almost everything in the apartment I stayed. (It was cool for me in the bathroom (no heater).
As for Three Star apartment it has everything it might have, plus historical building, perfect location.