Karla y Manuel's place was not an house to stay in, it was immediately our home in Madrid.
Everything was perfectly clean and all the details well thought of to make our stay confortable and easy. The place is spacious, pretty and with a homey feeling. Great location, close to stores and restaurants, in a quiet neighbourhood. Good access to public transportation, not far from the center. It was great to come back to the flat everyday to rest from the long walks in this beautiful city, and talk for a couple of hours in the small balcony. Last but not least, communication was perfect (even in a mix of spanish, portuguese and english from our side ;) ), the check in was as easy as it comes and Manuel was very helpful and friendly.
I couldn't recommend enough. We were there for an extended family weekend and were very happy in this place.