Wendy's apartment is right on Plaza dos de Mayo, which is one of the nicest spots in the whole of Madrid (I used to live there, so I know the city well). It's a really great cosy, modern apartment, and despite being in the middle of one of the liveliest nighlife areas of Madrid, the bedroom is well isolated from sound... I had no trouble sleeping and I really enjoyed my stay... I only hope it will be available again next time I travel to Madrid. Thanks Wendy!