José Maria’s apartment was very quaint and the location in Chueca was perfect. We had a very easy time getting around the city with the nearby metro stop (a 2 minute walk!).
Unfortunately, it rained while we were in Madrid and several of the skylight windows (which are lovely on a dry day) leaked onto the floor and furniture. As long as there is no rain during your stay, you should be just fine... and if it does rain, make sure there aren’t valuable possessions beneath the skylight windows.