I've stayed on board there twice for a week. I would say it's a good safe marina and would have no problem with leaving the boat there. But note: The stay would have to be for three weeks, as the ebb tide starts in the early morning every other week, so you will have a favorable tide at the start of week 4.
Thanks, we are heading south. The plan is to deliver boat to Rouen when tides are suitable and leave there. Returning when school finishes with kids, dog and wife to continue
I found it to be a great place to leave boat, it's safe, clean (apart from floating rubbish in corner, depending on wind direction) great location for town and transport.
Toilets and showers are kept very clean and laundrette is free(well it was two years ago).
I´ve stayed there and found it a nice place. Friendly people and of course you can de-mast at the yard round the corner. The Vignette for the waterways is only required after the first bridge.