Benjamin's place is a very typical Parisian studio with some very nice creative uses of the space. It's well situated, close to a major metro hub with easy access to most regions of the city.
As advertised there is no elevator although the building is installing one at the moment so there's a bit of construction in the stairwell. However we never heard the construction crew.
Double paned windows are great for sound proofing. There is no air conditioning but that's pretty common. Open the windows and it will cool down quickly.
Benjamin is very nice and check in was easy. Great value for Paris.