We booked our stay at Roesli Guest house but we actually stayed at Baslertor. Here we had a terrible experience one night, when someone from the outside entered the hotel, knocked at our door (and other bedroom doors as well) and tried forcing the door into our room (at 4 AM) and ended up staying ALL NIGHT sleeping on the floor right outside our door, making strange noises (this person was allegedly drunk), bothering our sleep and scaring us.
No one is in the reception from 24 - 7 and we had to wait until 7 am to call the receptionist, who eventually sent this person away. Although the hotel location is great and close to the main attractions of the city, we felt it should be more secure.