Cannot beat this location! The flat is extremely convenient to everything most travelers come to Paris to see, and the presence of the Alma Marceau metro station just a short walk across the river makes getting around fast and easy. There are a number of good bakeries within a short walk to grab an espresso/cappuccino and a pastry for breakfast, and the flat is just a few blocks away from the Rue Cler, which is loaded with amazing restaurants, markets, gelato, Laduree macarons, and more. A Fran Prix supermarket is also located just across the river, which makes it very easy to grab snacks/supplies/water for a stay in the flat.
We stayed in the flat for a full week with two adults and two 13 year olds. The space is definitely tight for four people, but it is easily manageable if you don't intend to eat meals in or spend a lot of time just hanging out in the flat. Although it is small, it is smartly designed to maximize the space available, and is very nicely finished and tastefully decorated. It was extremely clean when we checked-in. The entry is off the main street on a gated alleyway, and views of the Eiffel Tower are literally available right out the front door. Hosts are responsive and easy to work with. Certainly would recommend this property, especially for couples or families who will be on the go most of the time and don't mind cozy quarters.