Small but cute apartment, with all necessary shared amenities (private wifi and TV, shared bathroom with shower and hot water, and also access to kitchen). The subway stop is literally one minute away from the apartment door and is still considered "inner" Madrid (meaning, you use a regular metro ticket). The host was very helpful and nice.
The neighborhood can seem intimidating at first (it looks poor and dirty, with people drinking on the streets) but is nonetheless friendly. Even being two women walking around the neighborhood at night, we did not have any bad experiences in 3 nights of staying there. In terms of sightseeing, there isn't much to do in the area, except for going for a walk in Casa de Campo, the large forest area to the west of the city, where the zoo and the attraction park are located.