As a first time visitor to England, I can't recommend a better place to stay--or a better host.
David's home must be in the best part of London, as far as I can tell: beautiful location for walking, exploring, eating, and discovering, easy access to the tube and buses, and swimming in the Heath!
David is a warm and generous host. His home is lively with friends passing through, shared dinners and a crackling fire.
Yes to the magical outdoor shower, and the occasional yowling of his elderly cat!
He is also a singular tourguide-- hire him to show you the sites, bring history to life and astonish you with his own personal stories.
I have to admit, I would have loved to stay all summer!