Very cute little flat in an old house. If you like old houses and the charme they have, you will love it here. I enjoyed it a lot, the streets around make you forget you are in the middle of a huge city, but still the metro stations are just a few minutes away. Supermarket nearby, Bars even nearer (This is Madrid, after all!). Very quiet at night. High speed internet.
The landlady is really forthcoming and is very nice and helpful.
I read a comment about bad smell, and can confirm. But! This is just when due to heat and not enough use the water in the pipes evaporates, just let the water run in the shower for a few seconds and everything is good. Instead of complaining here, maybe talking to the landlady or just investigating the problem would have been better...