We had a wonderful stay in Madrid at this lovely apartment. We had a 4 and 2 year old and would recommend for kids. The location is very nice, quiet, right across from the metro, near Sagrada Familia, and within walking distance of the other main downtown areas. There were some thoughtful touches like the little packs of essentials in the kitchen and bathroom and well stocked dishes and bedding. The building is great with nice balconies and a handy elevator for all the stairs. Check in was easy and communication was clear and fast. We would highly recommend this place for a stay in Barcelona!
Pro Tip: the hot water might need to be turned on and the switch is right above the bidet