We had a wonderful month-long stay at Marc's Paris apartment. It is located convenient (1st Arr) walking distance to virtually all the sites in Paris and is just blocks from multiple Metro/Train stations to get virtually anywhere. The Montorgueil neighborhood is vibrant, eclectic with food and drink for any appetite. Marc's apartment is in the middle of this activity, but tucked around a quiet corner, so you can easily escape from the crowds and get a good night's sleep. The apartment is very comfortable, light/bright and fully equipped for any type of stay. Being in Paris a month we ate out numerous times, but also cooked both breakfast and dinner in the apartment. The De Belles Manieres Boulangerie(Bakery) around the corner is great for morning croisannts and lunchtime baguettes.
On top of having an excellent apartment in the right location, Marc is a very responsive host. The one time we messed up the internet/router (totally our fault), Marc was able to quickly assist us in getting it operational.