Unfortunately I don't think anyone should stay at this apartment unless they are a very deep sleeper, or they plan to stay out until 4 or 5am.
My partner and I were woken up (and kept up) every night of the four we stayed here by loud music with heavy bass that you can even feel vibrating through the bed. The music comes from a nightclub on the ground floor. Our host was thoughtful enough to provide earplugs, but these had little effect.
Everything else with the apartment is fine, other than being quite cold because the heating comes on centrally (you cannot turn it on yourself). It is clean, the bed was comfortable and the balcony has a great view.