The location of the apartment is amazing, the building is beautiful.
A few things to know on the apartment itself: the finishes are cheap (the toilet seat was moving, the hand door of the toilets falling down) and a few things were missing (we had 1 roll of toilet paper for 4 people for 5 days, no tea towels, no soap at all (dish washer soap nor soap in the shower), there is washing machine but with clothes inside).
One other thing - there is double glazing but we can still hear the noise of the street, as the bed rooms are on the street side.
To summarize: an apartment in a great location but not the best stay I have done in Paris at all!