There is no better place to stay in Warsaw-place is central and nearby area lastly turned into most well-known part of Warsaw for going out, dining etc. From here you can see and explore the best what Warsaw has to offer, off the beaten track as well
Smoking in the apartment is FORBIDDEN (there is no balcony).
Official regulations of the building:
Silence after 10 pm.
Smoking forbidden in common areas of the building.