Suany is a wonderful host; responsive, prompt, and keen to ensure that you have a good time in Madrid. I loved how warm she was, and the (homemade) guidebook and tips she gave me for local bars and other hidden gems.
The apartment is very comfortable and cozy, and centrally located. It is a five minute walk from a cluster of cute little tapas bars and cafes, and the museum triangle is very near by as well.
The apartment is a loft with a sloping roof though- so quite a bit of it is low and you will have to be careful to not bump your head, especially when getting in and out of bed. The kitchen is well stocked and comfy.