Really enjoyed our stay into Vanessa's apartment, very central to all city center main attractions and there is no real need for transportation but in case you may have to go to suburban areas, there is a metro station Chueca located just 2 mins away from location.
We particularly appreciated the local food in the surrounding restaurants which are very interesting. The communication through facebook messenger with the host made our checkin which was late at night very efficient as well as they showed a good reactivity when we informed them about the deficiency of the wifi, so they came to fix it the same day. Will definitely come back there if ever in Madrid