Amazing an beautiful appartment in the center of anything thats going on in montpernasse. If you're a bigger guy like me 1,87m and 81+kg i would recommend bringing your own pillow. The matres is not made for the heavier people.
Other than that the best paris experience you can have. Live like a local and reach any tourist attraction within half an hour.
Also close to the catacombs which is an amazing tour to behold.