I can wholeheartedly recommend Marc and Sophie‘s place.
The bedroom itself is lovely, with a sink and every convenience including a fridge kindly stocked with milk and yogurt, plus cereals tea coffee etc. The bed was very comfortable and the TV easy to use. Ample space for one or two people.
Communication was excellent from start to finish. And it is only 10 minutes walk into Mill Hill to find restaurants shops etc. There is parking as well.