Marc is a great guy and he does everthing to give you a great experience. The location is even better - it is in the center of Clerkenwell and you have everthing around what you will need during your stay including supermarkets and great pups.
It is just, that in my opinion the room is not suitable for business purposes as their is no convenient way to place your notebook or do some paper work. The flat is a bit noisy. Hence I won't consider Marc's room again when I am on a business travel.