It's a very good way to explore the city. Although some cyling experience is necessary. You have to have eyes everywhere. Lots and lots of traffic, crowded roads with cars, and everybody is just driving around like there is nobody else. Traffic rules, what traffic rules.
On the other hand we did explore neighbourhoods we normally wouldn't come.
Tomorrow we start with the famous Flea market, then go to the Eifeltower, Sacre-Coeur, Arc de Triomphe, and then probably to the Bois de Boulogne (big parc). The weather will be pretty good, the sky will be mostly covered with clouds but it will be dry. Our Etap-hotel is just like Brugge, clean and very efficient. And Marne, you wouldn't see the difference, they just look all the same.