My cousins and I arrived earlier than the scheduled check-in time, and David was very great at letting us enter the apartment earlier than expected. We arrived by train, which is only an 8 minute walk to his apartment. The apartment was very clean and spacious. David was a great host - he showed us around the apartment, gave us recommendations on things we should see/do, and was in constant contact with us to make sure our stay was good. The apartment is very close to the Metro station (about 10 minutes), so it was easy for us to get around Madrid. There are supermarkets and restaurants around his location as well, so you can always find food. Overall, we had a great experience. Thanks David!