This nearly 200-year-old bar— reputedly the oldest in Barcelona, is an absynthe bar. Was one of the locations from Vicky Christina Barcelona's film.
The Marsella is one of those places that Hemingway supposedly loved to frequent (Hemingway being to bars in Spain what George Washington is to inns in New England).
Can Framis was just another Poblenou factory at the end of the 18th century. In 2009 it was converted into a museum of contemporary painting, thanks to the Fundació Vila Casas
I only recommend walking around the Barceloneta beach at sunset, there are fewer people and in the fall and spring seasons is very nice to sit on a terrace watching the sea and entertaining yourself with the activities of the area.