Marta's flat is a perfectly located place right in the center of Madrid. An easy walk in every direction takes you to a different and interesting spot. The bed and furniture are very comfortable, and the flat is nice and quiet. Check-in was convenient and we were able to pick up the keys remotely, and Marta is extremely communicative and pretty much instant with replies to questions. Overall the flat is also extremely clean and well taken care of. Great place to stay.