The unit is a downstairs unit of a duplex in an older building. We had a problem with the noise from upstairs. The footsteps of people walking around upstairs were generally very loud, whether it was children running around in the evening or people arriving back from a night out at 2:30 am or 4:30 am. With only a few exceptions, there wasn't loud partying, talking or music, just the noise of people walking loud enough to disturb our TV watching or sleep.
There are several bars and restaurants on the next block to the east. Friday, Saturday and Sunday nights there was a lot of traffic and foot traffic from customers looking for parking and walking to the party area.
The living room sofa/futon was uncomfortable enough to cause backaches.
On the plus side, the host was very quick to respond to communications.