The first 2 nights of my stay I was unable to sleep due to the noise from another apartment above me. This was accompanied by my room being filled with cigarette smoke both nights.
Although there is a main door with a security code, I didn't feel comfortable leaving my things there because the door to the apartment moved so much and was so weak you could open it without even using a key.
The second part of my stay was better as the noise was much more tolerable.
If you aren't interested in sleeping much, are cool with knowing it would be very extremely easy for anyone else from the building to break in to your room, and comfortable with passive smoking then this apartment would be perfect for you. If not, I'd recommend you look elsewhere.