Flat is clean, compact, well equipped and comfortable. It has a lovely airy and light ambience. It's 2 mins walk from lidl (open every day til 10pm) and another nr Lavapies metro open 24hrs. Lavapies metro is 5 mins walk. Atocha train station 15-20 mins walk where can take renfe AVE national trains or the local trains. Close to Reina Sofia and easy walking to Thyssen art galleries- look out free admission times - both well worth viewing.
Only downside was the street bin collection daily at 3am. As no aircon, we were faced with dilemma of cooler open windows but woken at 3am or hot room with windows closed but quiet. Street itself is not too noisy for being in a lively area. We visited in May so were not expecting the "unprecented" heat. Although heat had started to settle as we arrived, it was still too hot for comfortable sleeping.
It's worth understanding Evelyn had very little English at check in but Google translate worked well enough.