Did not feel safe.
Check-in was off to a bad start: A man stole the key from under the door mat that I was instructed would be there (how do I know? Read on...), it was missing when I arrived - waited 30 minutes with my luggage on the staircase until someone arrived and saw I was telling the truth that the key was missing.
When I was let in, another tenant was passing by who explained to the man letting me in that she'd seen what appeared to be a "possibly homeless man" leaving the building shortly before and perhaps he stole the key (her suggestion).
Also, I was told a code to get into the building in the first place, but the door lock seemed to be broken because no code was needed - anyone could just open and close the door without the code. Not secure.
I let the man letting me in know this too. Was told the apartment locks would be changed. They never were.
A man used the key at 2am that Friday night and walked all the way into the apartment and was at my bedroom door by the time we woke up to confront him.
Reported this to the man who let me in and he assured me the police would be called, the locks would be changed. Never heard another word. I messaged both him and the Air BnB owner about this as well...still have never heard from either of them (it's been 5 days since this happened and 4 days since I returned home from my travels). Ultimately resorted to reporting this to Air BnB.
I don't think this is a safe situation for anyone.
Other than that, the apartment is spacious and nice, the location great (but seems to be in a "party" area as it's quite noisy till late hours down on the street that come right through the closed bedroom windows) and central to the water and many points of interest for visitors.