Elena (the host) was incredibly helpful. Despite a few jet lag mistakes on my part, she graciously directed me to the correct location and allowed us to drop off my bags early (which made our first day in Paris so much easier).

The location was ideal, easy walking to Notre Dame and the Marais. The little island the apartment is located on was delightful - with great patisseries and ice cream (Berthillon) just a block away. Be prepared for some street noise (ear plugs came in handy), but I'd imagine the apartment was less noisey than one would find in a busier section of town.