The town and its surroundings :
a lot of bars and little restaurants, close to the river Seine.
With its banks of River Seine and River Oise, its numerous barges, the museum of the Canal transport, its pedestrian side streets in the old town, its ballads in the surroundings, Conflans is worth a visite.

Some timing by car around Conflans :
Pond of Corra and forest of saint Germain (10') / the ponds of Cergy with a beach ans attractions (15') Auvers on Oise (20')
Palace of Versailles (30') / Paris (30') / Chantilly(45') / Giverny (50 ') / Rouen (1h20')
Etc. …
You can easily go to Paris, by car or by train (around 30')