I work internationally and leverage Airbnb as much as possible for my stays abroad. Dan and Eyder's apartment is exactly what I always hope to find - clean, quiet, close to transit systems, close to shops and restaurants, comfortable, and creature home comforts (not gonna lie...I considered stealing their pillows and bedspreads because they were heavenly!!). The apartment is situated at the NE corner of the El Retiro park - a very posh and quiet/safe neighborhood - so it is a pretty central location and walkable to many high end shops, museums, local attractions, and restaurants. Not enough praise and kind words can be said about the hosts Dan and Eyder. They are ideal hosts. Responsive (all messages/queries received a response within 30 mins, if not immediately), friendly, respectful of my privacy, flexible for checkin and checkout (and unlike some places didn't have a laundry list of items you had to do before leaving), helpful when I had questions of where I should go for unique or particular items, and I'm fairly certain they speak better English than I do. I highly recommend this apartment to anyone/couple/family who is traveling to Madrid for work or pleasure. You won't regret it.