The apartment is clean and very close to the center. For a business traveller it only misses wifi, an iron and ironing board and a hair dryer. The aparment is fairly quiet and has a great balcony with an amazing view. Isabel and her husband are very friendly and nice people. They don't speak much english, which is not a problem unless you have specific questions. Just look up the words in spanish before and you will be fine. People in Madrid don't really speak english in general so it is good to be prepared for that anyways. The kitchen is nice, but it does not have good knives (and did not have a winebottle opener until we bought one) or a peeler, so basic things are doable but a good knife would be a cherry on the top. All in all a good experience in a beautiful and clean apartment which is very well located.