We were a group of 5 women, and we found the space and furnishings adequate and comfortable. The location couldn't have been more convenient. It seriously is less than a five minute walk from the Louvre with two subway stops within blocks! The location was so great that we didn't use the subway very much at all. A stroll through the Tuileries brought us to the Orangerie and the Musee d'Orsay. There were more restaurants close by than one could hope for, including a the Azteca Mexican restaurant owned by the host's family. We also found a bakery less than a block away with fabulous baguettes and croissants which became our favorite breakfast fare.
The only thing I would suggest is that this apartment wouldn't be right for travelers with mobility issues. There are 4 doors/locks and one flight of stairs to get into the apartment, only an issue when transporting luggage. Also, those who like air conditioning might find the space too hot (though nice fans are provided in the living room and bedrooms). Also, the washing machine is tiny and we couldn't figure out how to use it, so I wouldn't recommend counting on washing clothes while there.