Creepy kebab place near Beresford Bldg?

Anyone have experience with "3 in 1 Extra" kebab/pizza that's on Elmbank/Sauciehall? Recently had a friend visit and she said her Airbnb owner had a deal with the shop owner that guests could have a free pizza. She went in and the guy at the counter questioned her about if she was visiting alone, had a boyfriend, etc, and told her he managed the Airbnbs in the building for the owner. She felt quite creeped out and said the next morning someone rang the bell and she didn't answer, and then they opened her Airbnb door with a key trying to get in, then shut it pretty quickly....... the whole thing left her pretty spooked. Wondering if anyone else has had a similar vibe from the place down there. Worrisome!