Pros:
Caroline's studio is very clean and is located centrally and close to a transit line making it easy to get anywhere in Paris quickly. It is also priced well for the value.
Cons:
The bathroom is a bit small, even for Paris, and the kitchen of the business next door can be quite loud at night and in the early morning.
Given the pros and cons I believe that her place is great for a short stay (around 2 days). If you are looking to stay any longer then you might want to consider all the factors when deciding where to stay.