Cute place. Be aware the building has no elevator, so pack appropriately so you can easily carry your things upstairs.
The apartment was clean. The bed was comfortable. Great location and easily walkable to all of the main sites in Madrid. If you don’t want to walk, the metro is easily accessed and navigable.
This space worked well for my friend and me. Enough space though wouldn’t recommend more than 2 people.
One thing to be aware of, the neighborhood is in an area that has a night life. If you’re in early and it is the weekend, you will likely hear people returning to their apartments and walking up the stairwell early in the morning.
Overall we enjoyed our stay. Javier was communicative and timely in his responses. We would recommend his place and likely stay again if we find ourselves in Madrid in the future.