The street doesn't feel very safe at night, but it's just a bad feeling, nothing actually happened to us. And once you're inside the apartment, everything feels right and safe.
Frank is really the nicest host ever, during our stay he checked on us to make sure everything was okay, communication was really easy with him.
Just note that there is no kitchen in the apartment, only a water heater, and a microwave. Restaurants close very early at the moment (due to Covid restrictions), so you might want to take this into account to organize your stay.
This is just info to take into account, but I really recommend this place!