Hello The Wood Duck,
Sept 2023 we used Enterprise, 91 Quai de Southampton, 76600 Le Havre, France.
Walking directly off the ship it was 15mins but depends on your actual ship berth location. It opens at 9am local time and provided off hours drop off with their security key box. Very satisfied with the service and car provided. Highway access is within 5mins drive from Enterprise. Cost was reasonable. Drove to Deauville and Etetat along the coast. There are a few "petrol" stations within close proximity to the Enterprise location should you elect to use the "return full" option.
Take Care
M