I've been on a Paceship PY26 (larger main cabin than most) for 4 yrs. now and it's been really good. Someday I'll have a 35'+ boat but this is fine.
I added;
pressure water system w/45 gal.
holding tank/Shower/Faucets.
Full head area/vanity
Microwave/Broiler/Oven combo unit.
TV, Computer, Internet, good Stereo etc.
Solar Panels, Charge controller and Wind generator.
Hinged
hatch (slider bites in winter)
Dorm Fridge (only uses 85 watts)
Better Seat/Bunk cushions

Sm. China closet behind fold-up Table
Propane heater
Insulated everyplace I could (Flex Foil/Bubble insulation)
Shore power 110 plugs/wiring
Kenyon butane stovetop