This is a great, cozy little apartment in a neighbourhood full of locals, with amazing bars, cafes and restaurants. The flat is exactly as it looks on the photos: clean, light and functional + equipped with Wi-Fi and has a hairdryer (not mentioned in the description). Every landmark of Madrid is easily accessible from this location by foot.
We did not get the chance to meet the owners, but we met their friend, Ana, who gave us the keys and explained everything about the flat. Be prepared, that in Madrid, not that many people speak english, but on the other hand, we were motivated to learn quite a bit of Spanish during our stay here.
I would recommend this apartment to any single person or a couple, because its quality:price ratio is extremely large.