I had a really great time, thanks to Dominique. Everything was as described. The room was lovely, light and clean. I felt really welcome and the directions he gave were great. He helped me everyday with my plans for the day and told me which Metro lines to use. His place is really really close to Gare de l'Est but very quite. The area is good, just one street down is the Canal Saint Martin, which is just amazing to hang around during sundown. So definitely listen to his advice to walk further up the Canal eventhough your feet are tired after a long day of walking around in Paris.
I think I will come back soon ;)