Gustavo's place is comfortable and and in a super convenient location, near multiple subway and bus stops and an easy walk from numerous attractions in the city center. Gustavo was super responsive to all our questions, sent us a guide to Madrid, and made recommendations about local luggage storage businesses when we needed to stash our bags before our evening flight. The building was quiet and easily accessible, with an elevator, and we didn't see anyone else the whole weekend. There are various grocery stores and pharmacies on the same street and it was easy to pick up fruit etc for breakfasts. Lovely large bath towels!