Benjamin's place is very convenient for its location! It's close to the Louvre, Notre Dame and the River Seine. It's less than 5 mins to local buses which take you to Paris landmarks like the Eiffle Tower in around 15 minutes. It's about 5 miniutes from a metro line and 10-15 minutes from the RER line. You also have lots of bars, coffee shops, and sandwich places nearby.
There was an issue with the toilet flush when I arrived. I was informed how to deal with this so as to not to disrupt my stay. Communication was really good!
I was initially going to book this for me and a friend who was also visiting Paris as the listing said one double bed and one sofa bed. Fortunately, she decided to come different days as there is only a sofa bed. Personally I found this bed uncomfortable and the constant creaking every time I moved kept waking me up. The pillows were also really small/old so you'd be best taking your own, if you need more support or there's more than one of you.
There is no kettle in the studio but there is pans, crockery, a small kitchenette and a coffee machine, if those things are required.
The building is really close to very busy streets but, because the studio is set behind a courtyard, the building is actually super quiet. There is also a heater/radiator in the room for when Paris is cold (which it certainly was since I visited in the middle of November).