The place is Shady Harbor Marina (Google it, it is impressive) on The Hudson River at New Baltimore. They mentioned that the would love to have seaplanes visit. We went last night for dinner and took so photos and generally liked the layout. They have Valvtech marine gas which is Ethanol free and the access to the pumps is pretty good, bearing in mind that there is a current and tide to contend with. The best way in is to enter from the south and there is a sandy beach right below the restaurant deck. It is somewhat of a tight squeeze but a high-wing should have no trouble. There are a few rocks just south of the little beach, that show up when the tide goes out, but they will remove them if there is any interest, making room for at least 3 floatplanes or Lakes. It is allowable to tie up against the T ends of the docks. Brian Donovan is the owner and mentioned that he has some old docks that he could put along the shoreline, but I don't think it is needed. The food is excellent and reasonably priced.
It is two marinas south of the Castleton bridge on the west shore. It is reasonable protected and unless there is a ripping southwind, it hardly ever gets too rough to land. There is usually someone there to help with docking and I believe they monitor 122.8 and 9 as one of the dock hands is a pilot. Go have a look and let me know what you think. They have mentioned they would install 100LL if there is enough call for it. The beach is on the far left.