It is a no frills very efficient studio within 5-8 min walking distance of Atocha. I believe it was an old apartment in a residential building converted into 5-6 studios. It has an elevator and the room has a window towards a roof and patio. Wall divisions for the studios are not soundproof, but there is a financial-penalty-backed quiet hours policy (10pm-6am) so noise wasn't a problem. Patricia was a very responsive and self check-in was simple. The place is very convenient if you need early or late transportation by train or airplane (express bus to Barajas leaves from Atocha) or if your main interest are the Museums (Prado and Reina Sofia). There is a place to print nearby (El Dedal) for all the last minute paperwork that you may need to print when travelling internationally. We unknowingly planned the visit to Madrid during Constitution holiday, so the prices were through the roof for both hotels and airbnbs, so can't really judge the "value"...it was certainly cheaper than any other option that weekend in Madrid, but significantly more expensive than any other lodging we paid for in our 12-day trip.