We had a wonderful stay at Guillermo's apartment, he was very helpful, accommodating and quick with his responses.
Guillermo wasn't there to meet us but we were met by his friend Antonio who was very helpful and friendly. Antonio was kind enough to meet us for a late check in and was very helpful which made for a great stay. The area around apartment (Malasana) made for a very authentic Madrid experience with lots of great local tapas restaurants and bars at your doorstep. The apartment itself, was lovely, safe, clean and exactly as shown in the pictures. Transport around Madrid was made very easy with a large metro station within a five minute walk.