My wife and I had an excellent three night stay at Martin's apartment. This was our first time ever visit to Madrid and we found the location to be excellent for getting immersed into the life of the city. Martin gave great advice and suggestions and was very welcoming. Two items one should be aware of is that the bathroom is on the small side and the apartment is on the 3rd floor (2nd by European count) with narrow access stairs. We found these issues to be minor. There are many great restaurants and a grocery story within 200 meters of the door. We ate in for several meals and out for more. Our only regret is that we didn't have more time to fully enjoy the neighborhood and the city. We'd love to return to Madrid and we'd love to return to Martin and Helen's apartment to do it.