We stayed at Martin's place for 2 nights and our general experience was good. We had difficulties getting into the building because we couldn't find the person who was was supposed to be expecting us at the time we arrived, and since we didn't have internet connection, we had to look for Wi-Fi spots in Coffees nearby to communicate with the host and check the situation. Another inconvenient was that we couldn't entertain ourselves watching TV while chilling at home because the remote control was not working (no batteries) and there were no physical buttons on the TV to change channels. Except for these, everything else was good, great location, safe building, comfortable beds. I'd definitely recommend Martin's place for anyone visiting Buenos Aires. I am sure the issues we had are easily solved and Martin won't let other guest experience the same situation we had.