i can only reccomend Charlotte's Studio....it's realy comfortable, everything you need is there! the location is very good to discover paris, close to the metro, close to the nice park with a lot of many young people, i also have to mention the bakery just down the road :-)
Jean Luc is a very generous and caring host, he explained me evrything before we arrived, left some informtation where to go...we could also check in a few days before our planned arrival without any problem, that was great. i hope they will have a lot more guests