My boyfriend and I arrived to check in and the keypad was unlocked with no key inside. We noticed a lit candle and my boyfriend knocked on the door only to have a squatter come out and get confrontational ensuing a verbal altercation. The squatter clearly had access to the keypad code as there was no other way they could have gotten in. We believe there was a second squatter inside but could not be certain. We do not know how long they were there. We immediately notified the host via the AirBnB app that there was someone in the unit. The host responded saying he would call the police. I also asked the host to call me and he never did. Out of concern for our own safety, we left and were forced to find a hotel for the night. After a few minutes we drove by the unit again to see if police arrived and it's obvious they were never called.