We rented bikes in Vernon in May for our Giverny visit. It is an easy ride and would definitely recommend if you are interested. There are 2 places that rent bikes near the train station. We rented from the bike store just down the street from the station, they had bikes including e-bikes and ones with trailers for small children. 10 euro for the rental of a regular bike including a lock and helmet. They will also store bags, we didn’t use storage but I think it was 5 euro a bag. There is a cafe, slightly closer that also rents bikes for the same price. It is an easy ride, almost all flat. We locked our bikes on the road near the entrance, you will see many bikes, there are posts to use, they are easy to see and they are beside where cars park on the road, you use the lock provided.We were on a quick visit to Paris so didn’t have time to ride anywhere other than to Giverny but if you had a bit of extra time the area is quite scenic and there are extensive bike paths.