I have stayed at several budget airbnb's in London this summer, and this one is easily my favorite. The place was clean, quiet, comfortable, and I enjoyed a view of trees from my bedroom window. Donovan was a perfect host. What I liked most, though, was the neighborhood. Not upscale, not overcrowded, just restaurants, grocery stores, shops, and plenty of character. A most agreeable vibe. And it's a short walk to several bus lines as well as the Southwark and Waterloo tube and rail stations.
I enjoyed the great international street food at Lower Marsh Market, a short walk away (M-F 11-3 only). Also the South Bank.