The location is very good. Nice restaurants and beautiful sights nearby, as well as easy access to public transportation. We stayed in Paris during the heatwave and it was quite warm in the old building. Of course we knew in advance this could happen when we decided not to spend more money and choose an apartment with AC. Mosquito nets for the windows and another fan would be helpful.
The apartment is a bit dated and could use some fresh up.
Still we had a very good time in Paris.