Positive: Great Location. It is away from the tourist side of the city but you completely get the Paris living feeling. So many cafe's in walking distance. Loved feeling a part of the culture. Various metro/train stations near that take you everywhere.
Opportunities: There is no Air Conditioning! There is no fans either. There is no way the air can circulate to the back bedroom. Yes the windows in the living room open but the one in the back bedroom does have a window but it only opens 2 inches.
Make sure you are ready to memorize 4 different codes for the doors.
Place is small but perhaps it is an Europe thing.