It's a members-only library but you might be granted access with a research request. The writer's room is great but there's a few special, hidden corners among the bookshelves to tuck yourself away in.
P Franco, wine shop, bar and restaurant. Amazing wine, delicious small plates (guest chefs) in a very lively atmosphere. The wait for a spot to sit down is worth it.
A beautiful and spacious (outside of rush hour) way to get from Highbury, through east London to south of the river in minutes. The train snakes epically through Hoxton and Shoreditch and opens up the Jubilee Line via the beautiful Canada Water / Bermondsey stations.