I highly recommend Leira s Air bnb . The flat is very modern and comfortable and so is the room! Leira is a very welcoming and kind host who is really helpful if needs be. I was treated with a very nice Roiboos tea , fresh mint and a delicious pecan nuts chocolate. You can also have access to a great pool and to the gym. It is also a very quiet place where you can rest, which is pretty difficult to find in Madrid.