Apartment is at best location possible at Madrid. we were 7 people and it was more than comfortable for us to stay there. very close to many bus stops and metro stations. madrid main railways station is less than 1 km. close to many attractions.
one thing that can be improved is, kitchen utensils were limited and kitche size is also very compact. there was some misunderstanding initially while check in but it was resolved by Martha after few calls. over all my stay was very nice and I definitely recommend this place.