We really recommend staying at Henrietta's place. The location is absolutely perfect. You are right in the centre of Madrid, with everything on walking distance. The appartment itself is really beautiful and has everything you will need. There is a lot of information on Madrid available in the appartment, which is really nice, and also Henrietta is always happy to help with tips about what to visit or where to eat. Hato and Wifi (the cats) are both also absolutely adorable! We've had a lovely first experience in AirBNB and we can definately recommend!