The second coffee shop has to be Kaffeine. Having only recently come across this one, I was certainly impressed and they may even have the best coffee I've had, since a short stay in Portland, Oregon.
The V and A houses a public collection of prints and drawings of every kind imagineable from old master drawings to photographs, playing cards, fashion plates and wallpapers. You have to select what you want to see from the collection http://collections.vam.ac.uk/and book in advance. The behind-the-scenes route up to the study room of v and a is a treat alone (pictured)
Heaven in the heart of ugly Vauxhall. This peaceful and enchanting spot used to be squatted and has a very bohemian feel to it. Don't miss the secret garden with mosaics made of cups and plates. The food in the Italian deli is delish, a guy called Richard cooks it.