It is a truly lovely place amidst Paris 11eme - lively district, close to Bastille and Marais. Historically a studio it has an artistic feeling to it for those who can appreciate it.
Shops are around, metro 100 m away and Paul is a great host, easy to talk to.
Comfortable for 4 persons with nicely equipped kitchen, working wifi and really quiet inner courtyard.
I highly recommend Paul's flat! :)