My friend Sue and I recently stayed in a twin room in Diane's house. The room was spacious, bright and clean, as was the bathroom. Beds were comfy with nice pillows, duvets and bedlinen.
We easily found on street parking nearby, which was free as it was a weekend:) The house was so convenient for the underground, bars, restaurants etc and the Brixton Academy (where we were going) was a short walk away (just under 10 mins).
Diane is a lovely, warm and friendly host and quick to respond to any queries ahead of the booking. Highly recommended!