My review is in strong recommendation of Marc's apartment.
The apartment is very nice and very clean. The view on Paris is spectacular. Watching Tour d'Eiffel during night is a stunning experience. Having stayed in many cities (e.g. New York, Chicago, Beijing. Auckland) I have Never experienced such a view. The apartment is equipped with many useful devices (e.g. Washing machine, microwave, vacuum cleaner) that makes life comfortable. The apartment is located in a decent surrounding close to two metrostations (Gambetta, and Pere Lachaise) that makes it easy to travel downtown. A super market is very close in walking distance. Many restaurants are nearby.
Marc was a very friendly and nice host. His communication was precise and timely. He took his time to explain everything in detail. Some insider knowledge about Paris and sightseeing Tipps were also part of his descriptions. We will book the apartment some time soon again. Compared to hotels (4 star and up) in Paris, it is a hot bargain.