I'd like to recommend Toni's flat sincerely!
the location, the room, and the host.. everything was perfect.
Toni's flat is located in 'Poble nou'. this town is very close to plaza catalunya and barcelloneta. but it has it's own central street, so u can enjoy lively mood without going out to 'crazy touristy' area.
it takes only 4minutes to metro, and 5minutes to the beach!
and the room is clean and comfortable like photo. and u can also use refrigerator and washing machine too!
and the host Toni. he is really nice person. I was late for the check in time (because my plane had been delayed), so I was really embarrassed. but Toni never complain about that just kept trying to ease my mind. and when I leave for airport he booked a taxi for me. he was kind and thoughtful. if I visit Barcellona again, I'd like to stay Toni's flat again... :)