Alex's place was great! His sister greeted us and gave us a lot of good information for our stay in Barcelona. She even let us text her after the initial meeting in order to ask any follow up questions.
The apartment itself was very nice and clean. It suited our needs very well. The neighborhood was quiet and seemed safe. It was a bit of a walk from the metro (shorter to the bus stop) and very hilly. all in all, it was a very positive experience to rent from Alex and I would recommend trusting him.