First. Just be super aware there are multiple units in the photos and the one features most heavily is significantly nicer looking and had a better layout than the unit we were in.
We were not given any choice in which unit we ended up in and I had young kids - elevator too small and creaky we only used it once
Our unit was on the very top floor. It had very nice private terrace. I am uncomfortable in a building that high with no fire exit. I might have unrealistic expectations because I know these are old buildings. since there is no fire exit I think there should be a building wide smoke alarm that would alert all units if there is a fire. I travel with my kids and that kind of safety stuff is really important for my peace of mind. The smoke detectors are only per unit and not connected to each other when I asked about it. The one in our unit was painted over. This might not be important to others but it was to me and I didn’t like it. It seems the company owns the whole building.