We had such a wonderful stay in Alex's apartment. The flat is just behind the Vatican and near the centre: 10min by metro or 30 by walk. It has everything as described and the big terrace really makes the place. The furnishing is quite lovely as well.
Alex is a wonderful host too. He welcomed us when we arrived, answered all our questions and gave us some nice adresses of restaurants and places to visit.
I would recommand this place without hesitation and we look forward to go in Alex's place in Madrid !