The location of Marc's place was fantastic! As other reviews have said, the key things to be aware of are the 6 flights of stairs, and the fact that the apartment is VERY small! This was fine for us as we really didn't spend too much time there at all, but when you add two people's suitcases to the room, there really isn't any spare space. We were there 3 nights which was perfect- I think if we stayed too much longer, the lack of space would get to us.
Marc was a great host- very clear communication and willing to provide recommendations. Thanks Marc!