I really enjoyed my stay at this cute apartment. It's bright, comfortable, and has nice amenities (the tall fan in the bedroom was particularly nice on hot nights). The kitchen is chic, and the anime décor is charming as well (YMMV depending on your taste!) - I enjoyed being able to host my friends for dinner one evening.
It's also close to metro lines (Convention and Boucicaut), which makes it very accessible to all the cool tourist spots downtown. The neighborhood (15e) is lovely and tree-lined, and has some great cafés and breakfast options too. Matthieu was very responsive and helpful throughout my stay.
Overall great experience!