Marc is an amazing host. He gave me lotsa tips and information on how to use the metro to get to the place I want to visit. The neighborhood is quiet and safe, perfect for travelers. 5 minute walk away to Alexandre Dumas metro. You can take Line 2 and change at the next stop at Nation to Line 1 that will bring you to most of the Paris tourist attractions. Very convenient place to do all the sight seeings.
Don't forget to try the restaurant that was run by his friend, Bistrot de la Bonne Cécile. The food is amazing at an affordable price. There is even a French bulldog called Gaspard there. No wonder it has such a good rating at Tripadvisor and Yelp.
Marc is also very hospitable and I had a good time to chat with him. I truly enjoyed my stay and definitely will be back whenever I visit Paris again. Two thumbs up! Thanks, Marc!