How exactly would you define a 5-star minecraft hotel anyway?
Wooden paneling on the walls, tastefully colored wool "carpeting", a "queen" or "king" size bed (3-4 standard beds put right next to each other), maybe a fountain in the room, also a record player. Maybe the room is more than two blocks tall but there would need to be an anti-Enderman sprinkler system in place for that. Maybe some kind of dispenser "minifridge" stocked with healing potions, cooked beef, pork, and (eventually?) lambchops.