Apartment in a good location near Metro/train stations. Everything you need is there with hotel quality bedding. It's a classic Madrid flat with thin walls so you hear the neighbours talking when they're home at the same time as you are.
Also we are tall people and the flat is definitely designed for those under 1.8m or you can't stand up in the bedroom area and you bang your head on the lights in the kitchen.
Generally everything is well organised and there's good communication with the agency but it didn't feel like a typical Airbnb experience as this company rents out masses of flats across Spain.