Lovely studio apartment about 10 minutes (walking) from the Atoche station, about 5-7 minutes to Reina Sofia and parque de retiro, and about 15-20 (walking) from Plaza de Espana, Plaza Mayor, the palace, etc.
Lavapies seems to be a neighborhood undergoing some renovation/transformation. This means that a couple streets are a little more rough-looking. The good thing is that the apartment is not near those streets; you should just be aware that the neighborhood shifts a little if you wander too far from the area close to city center/the main areas. BEST of all --- It also means there are some really wonderful small restaurants that are affordable and produce some amazing food; the apartment is excellently situated for these restaurants.
Very clean apartment, and Johan was super responsive for any questions or concerns we had.
Bed is firm, which was good for us, but is something to know.
Apartment is on the third floor, with no elevator. Again, this wasn't a problem for us, but is something to know.
Apartment is super secure and safe with both a locked outside door and a deadbolt on the apartment. We left our passports in the apartment a couple days without any worries.
While there is no washer/dryer in the studio, there are a couple laundromats nearby. One of these will wash and gold your clothes for you for relatively cheap; we used this option for a handful of clothes and it worked out great (cheaper than washing it ourselves, and we didn't have to waste any vacation time waiting for laundry to dry).