My husband and I have stayed at several Air B & B apartments in both the US and Europe and I would say that while they have all been very nice, Teresa's delightful apartment in Madrid is as good as it gets. I did a lot of research before selecting this apartment because we are not young (we needed an elevator) and while very familiar with Madrid, I had never had time to really explore the neighborhood where the apartment is located.
We were fortunate to manage an entire month with Madrid as a glorious pied de terre, with a 3 day visit to Cordoba and a day trip to Cuenca. But the rest of the time happily esconsed in and around the Barrio de Las Letras, the historical literary neighborhood that gives this area of the center of Madrid its charm and attraction.
What I'm suggesting is that Teresa's apartment truly needed to be home. Let me point out that while Madrid in January/February is often in the low 50's F during the day, by daybreak it's close to freezing. So heat is important. If you go in the summer, the outside temperature is sweltering. In either situation, the fact that the two french windows have double glass/double doors is essential. The apartment has an excellent independent heating system and I assume a good cooling option as well.
The bathroom, with its gorgeous washbowl, terrific walk-in shower and bidet, make the amenity first class. Having a powder room option for a couple or three people, adds to the overall comfort of the setup.
The bed is larger than most - close to an American queen size - and very comfortable. Thankfully, all the linens are white cotton. She offered us the option of maid service half way through our stay which meant lovely ironed clean sheets once more and a spotless apartment to return to after our hiatus in Cordoba.
As others have said, everything else, from the kitchen to the washing machine, to the iron and board, etc. etc. were all one could need and more for as long as anyone could choose. And Teresa could not have been more welcoming and helpful. We arrived on the day a city-wide taxi strike began, dragging on for 16 days. But that first day, the end was left to speculation and Teresa offered to take us to our early morning flight to the airport had the strike not ended. That is no ordinary host!
So would I recommend this apartment to anyone wanting to enjoy a lovely part of Madrid? Most certainly.