My wife and I stayed here during a whirlwind 48 hour Paris trip. There are few superlatives about this apartment that haven't already been published in other reviews, so I'll just echo what's already been written:
1) If this is your first time in Paris (as it was for us), the location could not be better. You're within short walking distance to all the major attractions (could be a negative if you're looking to get away from it all).
2) Despite being right in the middle of all the Champs Elysees bustle, its street location makes for a surprisingly private and quiet experience. Serene.
3) The look and furnishings are all top notch. Agreed with prior reviews that state that the apartment is much nicer than it looks in photos (really, believe it).
4) We ate out every meal, so the small kitchen was not an issue to us, but it would definitely be a challenge to those travelers who would prefer to cook their own meals.
5) The balcony is unreal.
6) Check in and check out was a breeze.
7) The host was very communicative and made the whole process easy.
We will *definitely* be back the next time we're in Paris.