This is a very well-located room, and Alberto has managed to fit everything you could need into a small space. The bed was comfy, bathroom functional, everything you need in the kitchen.
There are two flights of well-worn and slightly uneven stairs up to the room, but they are not too narrow and Alberto helped us with our luggage.
The airconditioning unit is a portable one so it is quite noisy, but there is also a freestanding fan which is a bit quieter and still effective for keeping cool overnight.
Overall a good spot from which to explore Centro Madrid.