The unit is located under Wanka's apartment and has its own entrance. The only time the host would come down is to use the washing machine but he will always message ahead of time and also verbally ask if it's okay to come down.
The biggest concern for me is that the wifi technically reaches down that far but is very poor quality. If you are only looking up a quick website, email, or browsing, this would be okay in the living room area. The wifi in the bedroom disconnects every 20 seconds. If you need to make a continuous call or to stream something, you literally have to sit on the couch or the actual stairs leading up to have a steady enough connection (and even then I would get disconnected a few times). My phone is a brand new Google Pixel 6 Pro so I can't fault my phone. The inconvenience came to fruit when I first got there and did not have a working SIM card yet. I did offer to help install a wifi extender or repeater for the host but never got a response back.
Lastly, you can hear the noise from the people upstairs. I can hear when they're moving around, preparing dishes for meals, etc.
All in all, it's a decent place but only if you're just there to sleep. Would not recommend as much for a home office environment.