tl;dr: Do not come to this place if you look for either a quiet time or a fun time with family. Do come if you want to be exploring the city and only look for a place to sleep.
This was the first AirBnB I ever quit. The reason for this is the extremely poor sound proofing of the place. I live in California, and therefore I am used to hearing my neighbors but this is next level. The house rules, which are barely mentioned here require quiet from everyone but it is impossible to fulfill. I was understanding single words spoken at normal tone from my upstairs neighbors. We also had a baby with us, which makes fulfilling the house rules impossible and I felt sorry for our upstairs neighbors in the same way I felt sorry for myself not being able to sleep at this place. I'd not recommend this place for anyone but single travelers with great ear plugs (although the thumping sounds from people normally walking around isn't blocked by those).
There are positives, namely the quick communication, the cleanliness and the location (Hawthorne is an amazing quarter). There are further downsides as the flaky WiFi (although we didn't give Levi a chance to fix this), the lack of natural sun light (this really is a basement unit).
Overall I have the feeling someone tried to maximize the output of the property by adding this apartment to the house, which is kind of the flaw of AirBnB sometimes...