We stayed at David's apartment for 2 nights and 3 days. He was at the apartment when we arrived and was very accommodating. He made sure that we were comfortable by showing us around his place and giving/explaining directions to places we wanted to visit. The location of his apartment was perfect. It was a 10 minute walk from the subway and a good walking distance to the main train station.
The apartment was very clean and well maintained. Unfortunately, we only saw David once when we arrived and we wanted to thank him personally when we left. However, he was constantly in touch whenever we have questions.