The place is central and well connected, the communication with Vanessa and Samuel is fast and very good. They both are friendly and help in case you need suggestions for restaurants, museums or places to visit.
The flat is small, the picture captures the room perfectly. For me it was more than enough because I wanted to discover Madrid instead of staying inside. Samuel and Vanessa are also living in the flat, you will recognize it. The bathroom is small and clean. The internet works. They can provide a map in case of need.
For longer stays, I suggest something with more space but for short term travel it is just perfect and I would definitely return. Thanks for the hospitality to you both!