The flat was located in a very nice area close to restaurants and various bars. There were plenty of grocery stores just nearby, as well as metro stations and the Chatelet-Les Halles train station. There is a quite busy road next to the flat, but the windows isolate the sound very well, so it did not bother us at all. It is also located on the top floor so you get a beautiful view.
The apartment was very spacious, and you could use the sofa bed if you had any guests coming over. It was equipped with most of the things you need such as cutlery, pots and pans, glasses, etc. There is also a dishwasher and washing machine. However, most of the equipment and the apartment itself are quite worn down, and we experienced several problems with the equipment.
On a more serious note, the communication with the host was very bad. It could take up to several days and several messages before they would answer. When we experienced problems with some of the equipment it would take forever for it to even get looked at. For example, when we experienced a problem with the oven/microwave not being able to start, it took 8 days before someone came to look at it and fix it. This is something you should keep in mind. Also, there is no mailbox available for you to use.
All in all, the location was great, the apartment was very spacious with two decent bedrooms. However, if you experience any problems, it will probably take a while before getting it fixed.