Excellent city apartment in a vibrant and busy area (within reach of tourist spots but far away enough for an authentic Paris experience). Very clean and easy to find, good directions from host and right next to a metro station. Enjoyed browsing Nicolas' vast book and music collection.
Very little noise from the street (but being an apartment in the city you do get some noise from neighbours). Be quick with the shower as hot water runs out fast - apparently common in Paris apartments!
Overall an excellent stay!