Davids place is exceptionally clean and tidy and has a small garden space to relax outside.
I appreciated being able to have a bath, and the Kennington tube station (northern line) is a few minutes walk away, so it's very well located to see London, whilst being a quiet area just off the main roads where you can find greasy spoon cafe's and old London pubs and anything else you need.
I very much recommend the Walworth community garden (2 mins walk around the corner) which is a very green space full of plants where you can get a cup of tea for a pound and free internet. They have 2 parrots and at least 1 cat. You can also take part in gardening classes there.
For a run, Kennington park is great, and the nearby Taro Japanese restaurant is fantastic. It's only a 35 minute walk north to the river in the London Bridge area, and if I'd had more time I would have gone to the flea markets at Brick Lane.
In my 2 nights on a work trip that's about all I found to pass on.
David and his wife made me feel very safe and comfortable.