A simple and well-located apartment; functioning kitchen, lovely light, tidy and newly-renovated. Walkable to Prado, Reina Sofia and other museums, as well as the enormous Retiro park which we enjoyed most days. Several metro stations nearby; we also walked about 40 minutes to the Royal Palace and touristy part of town. Plenty of great restaurants nearby; we should've eaten in the Lavapies neighborhood but only discovered it our last night (eat at Borodin!!!)
Marta greeted us at 11:30pm when our flight was slightly delayed, which we were grateful for. She gave us a brief intro to internet, laundry, and other basics; other than very good communication with Alfredo, we had privacy.
Apartment is in an active, urban residential building so expect normal noise from neighbors going to work in the morning, etc. We were jetlagged so wore earplugs so we wouldn't hear ambient noise but we're also sensitive/light sleepers.
Overall, exactly what we hoped for, well worth the money, and hosted by attentive people who know what Airbnb travelers are looking for.
Muchas gracias Alfredo y Marta!