I'll suggest you check out a Carrie Craft, this is a catamaran
houseboat and there have been several on the markey (2 or 3) that have been updated and refurbished, they do have steps but a lift
would work. All living space is on the main deck
and floor. These are old, heavyly built boats and they have been through the Panama Canal
and all over the ICWs and Bahamas
. Probably not for the North Atlantic but more seaworthy
than any other houseboat. All docks and morrings are not the same, and the aft area can take a sling lift
and a lift to the upper deck which on some are really big party areas. Check them out, low draught and beachable too!