We had an excellent stay at Raul's Airbnb in the Lavapies neighborhood. Raul was waiting for us when we arrived and maintained excellent communication throughout our stay. Although the building was non-descript and the lobby and public areas a little dark, the apartment was just as advertised - even better actually - with large airy rooms and a wonderful little terrace to sit on after a full day of sightseeing. Both bedrooms were comfortable and had more than enough storage space. We had no problems with noise from the street level once inside and with the windows closed. The kitchen had everything we needed during our stay. We used the washer (and like every other place we have been in Europe and the UK, there is no dryer, but there were clothespins provided to hang clothing). The apartment was stocked with cleaning supplies, dishwasher and laundry detergent, and even had a first aid kit (though we did not need this.) The apartment is only a few short blocks to the Reina Sofia and a short walk to the Prado and convenient to most of the major sites in Madrid. The Lavapies metro station was only two blocks away and we found the metro very easy to use. The Atocha train station is within walking distance and the major bus stations were easy to reach from the Lavapies metro station. We also really loved discovering the Lavapies neighborhood, which was a bit gritty, but very lively and felt less touristy than the other areas we visited. There were several excellent restaurants within blocks of the apartment and a full service grocery store (open 24 hours) was located right across from the metro station.
If we need two bedrooms again, we would definitely return to this apartment.