Richard's place is lovely, it has a historic luxurious feel :D. It's like a well maintained old house with history and comfort. I would definitely recommend staying here, and Richard is very kind and responsive.
Location: minutes away from the Arsenal station, which is the Piccadilly line (pretty convenient especially if you're coming from Heathrow). Otherwise like 15 min to downtown.
Cleanliness: Clean, towels and sheets smell nice. Everything was tidy and organized.
Other details: Beds were comfy. Towels, soaps and kitchen appliances were nice quality. The house has pretty good ventilation with big windows you can open in the hot summer.
Bonus: Decoration gets an A+, nice furniture, cute little plants and candles and details about trips everywhere. You can really feel the personality coming through.