Good location nearby the Pompidou Museum. Close by all major attractions.
The apartment itself is worn down...if you are in a good shape to walk up to the 5th floor with all of your suitcases (no elevator in the building) and could care less about squeaky floors, lack of Air Conditioner ( AC is a rare thing in Paris :)), some really dusty lamp fixtures and stalagmite that is growing in a shower door track, this could be a place for you to stay...as I've mentioned before the location is the best thing in this apartment...
Also, whoever took photos of that place was a good photographer...all of the accessories (area rug, pictures on the walls, etc.) that you see in the pictures are no longer there...