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.
It has such a special vibe, it is very near Columbia Road and Broadway Market
It is surprising to find a farm in the middle of the city!
Very recommended having English Breakfast there :)
I grew up in the countryside, and if you're ever in need some instant escape from the city, this place is like a time warp. It's a huge space full of over grown mausoleums and graves, feels like a movie set. They also do tours.