Willem apartment is an excellent place to stay in Madrid. I stayed here for work. It is well connected to the city center . Though it's very quiet, it is located in an area plenty of shops, supermarket, bars and restaurants. The apartment itself it's really cozy, with 2 bedrooms and a lot of space to put your stuff. The kitchen is fully equipped. Also there is a very nice patio on the side of the living room that you can enjoy in the good season. The cleaning is excellent and the apartment had been sanitized when I checked in. The communication with the landlord is also very good. Definitely recommendable.