Karl's apartment was a great choice for our first visit to Paris! It was cosy, comfortable, and chic. I really liked the fact that the apartment is part of an older building - it has a unique character and a historical feel. Karl was very quick to reply to messages and we had a very smooth communication.
The location is great too and it is an excellent choice for people who are new to Paris. It is a 10-15 min walking distance from Arc de Triomphe and Champs-Elysees. You can even walk to the Eiffel Tower for 40 min. Another benefit of the location is its close proximity to Porte Maillot, a major transportation point with the easiest access to metro and RER stations.
Many restaurants, a pastry shop, shopping mall, souvenirs and art shops, and even the oldest organic food store in Paris are located at a walking distance.
I would definitely recommend Karl's apartment! If I come to Paris for another trip, that would be the place I will choose again.