I stayed in Belén's apartment for a month and really enjoyed my time there. She is a great host, the check-in/check-out was easy and she was very considerate, professional and always available to answer any questions.
The apartment is centrally located and within easy walking distance to the major tourist attractions, shopping areas and metro stations. Although located in a busy shopping street, the apartment is on an upper floor, rear facing, sunny and very, very quiet. It is decorated with quality furniture and is very comfortable and cosy. The bathroom is very modern. And, although tiny, the kitchen is well equipped with everything you could need.
I'd definitely stay here again - highly recommended!