Staying with Jem was a delight. Jem is a fantastic and thoughtful host. His flat is in a superb location, only a few meters from Picadilly and the immediate neighborhood, Sheperd Market is a hidden jewel. I can wholeheartedly recommend L'Artiste Muscles for a meal, only a few doors down.
The flat is very narrow and spread over four floors with rather steep stirs which can be an issue if you have a lot of luggage but if you are traveling light and able-bodied this flat is a wonderful place to stay.
I will certainly be booking with Jem again the next time I am in town.