Our three-night stay was sufficient. The room is very spacious and bright, with a large bed but no closet and only hangers. The linen and towels provided were okay. There is a fan that obviates the absence of air conditioning, indispensable in my opinion with the temperatures in Madrid.
In the room there’s a small table that obviates the absence of a living room and that could be used to eat: it could be okay for one person, not for a couple.
The kitchen is very small and insufficiently equipped (lack of basic condiments or some cooking utensils).
The bathroom is okay with a spacious shower.
The apartment is not very airy and this results in the cigarette smell spreading easily to the rest of the apartment, not pleasant.
Overall it was a sufficient stay, not recommended for long periods.