David was an extremely kind and courteous host. He allowed us to check in pretty early, right after we'd arrived on our flight from London – this was great given that most hotels would require you to wait for a late afternoon check-in. Upon our arrival, David gave us a very warm welcome and spoke to us about all of the local places he recommended we visit for our trip, as well as a detailed tour of the property.
The property itself is located near two transit stations (for the U- and S-Bahn), which made it very easy for us to get everywhere we needed to go. One of the stations (Westendstraße) was located directly next to a gas station that enabled us to pick up anything we needed, whether early in the morning or late at night. The neighborhood is quiet and felt very safe throughout our trip, even when returning to the property around 2am on a Saturday night.
It should be noted that the accomodation is in a shared space, but our co-visitors were also very nice and we never had any issues. The only reason I'd note this is that there was one occasion where I was in the restroom and someone else wanted to use it.
The only other note I have is that there is not as much ventilation in the space as we would have preferred, given the number of people in the property – after we came home one night, there was a heavily unpleasant smell in the common areas that we were unable to eliminate during our stay.
All in all, we liked the location, thought David was a courteous host and felt the property was well-worth its inexpensive cost.