We had a wonderful stay of 2 weeks in Marcelo's lovely apartment, which was spacious and comfortable. I would definitely return if I revisit Madrid. The local area was very pleasant with friendly people and supermarkets, a market, shops and restaurants close by. We particularly enjoyed sitting out on the balcony - there was just enough space for a couple of chairs and a small table. Miguel, the concierge, was very helpful. We used the BiciMad bikes and the tube to get around. There is a BiciMad stand just outside the apartment and a cycle lane linking from the roundabout at the bottom of the street. For english speakers - there is very little english spoken in Madrid generally with the exception of at main tourist attractions. Although I speak spanish quite well I found it very fast paced!
Many thanks, Marcelo!