Stayed 6 nights at Juan Alfonso's place with our 1YO daughter. All was well prepared in advance for us, so no objections here. Location is perfect, all sights accesible by walk. Only 10-15 mins walk from/to airport bus stop at Cibeles. Apartment have all you need during your stay and if not, there are two small groceries on the street. Great communication via airbnb in a few minutes with Juan Alfonso even not speaking 'inglés' ;))
Only few things for improvment and attention. Master bed at bedroom is quite small for two I would say, but you can still use sofa in the living room. I would not recommend this place to families with children as there are discos right under the windows and spanish youth is loud and smoking on the street from 10pm till 5am (every day, not just weekends). And one more, during the day there is noise and dust from the hotel reconstruction few houses away.
But overall satisfaction!
Thanks a lot Juan Alfonso.