I've definitely had that "If anybody asks you are guests of Tiffany" from the bearded guy doing the checkin. Apparently the building management was hostile to AirBNB, but the funny thing is that we saw the occupants of two other apartments on the same floor that were clearly people on vacation just like us. I had a strong suspicion that most of the building was bought up by foreign investors and turned into AirBNB rentals.
But the location was in walking distance of the major attractions in downtown and cost a half of what the local hotels were charging for "three" bedrooms (really two bedrooms and a closet with a bed crammed into it) vs. a single room with a pair of doubles at a hotel. It even had free parking, unlike the hotels that were charging $40-$50 per spot per day.
I mean yeah, it feels sketchy as hell, but the place is nicer and literally hundreds of dollars cheaper than a hotel.