About once a month, there is a fashionable little market at the Gallery Hotel, put on by Barcelona Events & Markets. There are artisinal fashion stalls, a wine bar, a jazz singer/DJ and a cool vibe. There really is also something for everyone (my friends and I found!).
The next one is on the 21/22 November (just in time for Christmas shopping), and if you don't want a shop, it is a nice place to stop for a wine.
UN BESO: Gallery Market, C. Rosellon 249, X