We had a great stay at Raquel's place. The apartment is exactly as it appears on the pics. We were 5 people and at time felt it is a bit cramped but easily manageable. The apartment was clean and felt really new. Basic but good furnishings.
She was gracious enough to leave us with basic stuff like coffee/ tea/ sugar/ milk ---really helped us as we reached Madrid pretty late. Raquel was waiting for us to check in despite it being 11 p.m. that was really nice of her.
The apartment may feel a bit far from the central attractions but they are all easily reachable with a single bus( metro station is a 8-10 minute walking-we had 2 senior citizen and even then we didnt struggle with the walk) .