We had a great stay at federico's apartment. The flat was very clean and a perfrect space for 2 people and the communtication before arrival was great. Federico was very helpful in giving us a map and directions about where we would find the local supermarket etc.
the location of the apartment was perfect: a 3 minute walk to the closest metro, about half an hour walk from the sagrada familia and 40 minutes walk or so from catalunya/las ramblas but the route was very simple and we had no trouble finding our way around. Would certaintly visit this flat again on return to barcelona.