I stayed at Felipe & Pilar place for two nights together with a colleague of mine. The apartment is clean, cosy, easy to reach. There are two rooms with two bathrooms, so it's perfect also for people that want to share the apartment but keep a good level of privacy. Silent even if is really in the heart of Madrid and near fantastic areas where you can have nice walk, eat and enjoy the city.
Location is close to our office, but it's perfect also for tourists. In this area you can be and live as real local.
Thanks again to Felipe & Pilar.