Pros:
Unbeatable central Paris location in a lovely neighbourhood - shops/restaurants/Metro within a 2 minute walk
Excellent clear communication with host - even out of hours
Really good value for money in this part of Paris
Cons:
As a previous reviewer mentioned, there is a noise in the main bedroom like an electrical transformer which is quite loud and takes a bit of getting used to
Like lots of AirBnBs I've stayed in, pillows were uncomfortable and could do with an upgrade
One word of caution - if any of your party have reduced mobility, the kitchen, bathroom and toilet are accessed via a staircase with narrow steps (you have to point your feet at an slight angle) so might not be suitable