Best location you can ask for! Close to metro stations and steps away from Louvre. There is also lots of restaurants and grocery stores around.
We had some issues that were unexpected due to the price paid for this place (it's pricy):
1) TV doesn't work properly - audio stops working after 10-15 min.
2) Toilet paper - there was only 1,5 rolls which weren't enough for our stay - that should be something very easy to have in stock in the apartment accessible to guests.
We addressed 2 points above, but host couldn't fix it by the time we left.
3) Shower - we were 2 people there, first shower was great, but when the 2nd person would shower there was not enough hot water.
4) Coffee capsules - it would be a nice touch to leave a full sleeve of Nespresso capsules, as oppose of 2 capsules only.