Mark is a perfect host. Only saw him once, but he was very communicative and helpful. He went above and beyond to make sure I got in safely, and he stayed in touch to answer any questions I had. Value wise, the place is unbeatable. It's in city, close to everything, and a very easy walk to transit (which is all you really need in Paris). Place was clean and safe, a bit Spartan, but stocked with everything you need including a shower that got hot more quickly than many Paris spots, washing machine, and a full kitchen with complementary biscuits, butter, jam, juice and milk. I hesitate to say 'highly recommended' only because I'd like the place to be available for my next Paris stay, but I can't short change a very solid host. If you come to Paris and you appreciate a great value, Mark is the way to go.