Ok, I think I've finally found where Jillian's parents are: Fairways South #17 villa at the Mauna Kea Resort . The pics from the preview of Ed, Jill and her dad hula-dancing in the back yard match the backyard grounds and the pools, the stepping stones and the rocks behind them. Also has the same kind of wood built-ins we seen in the living room of the preview in other rooms. The other villas for rent there are different.
The Hapuna Prince and Mauna Kea are both owned by Prince Resorts. The Hawaii press release says in the credits (not description of episode dates) that filming took place at:
If you google Fairways South #17 and mauna kea resort you should come up with more pictures.
So, since Kip is matched to the Mauna Kea hotel, her parents to the Mauna Kea Resort (which is the residences around the hotel), Ed either is at the Hapuna Prince, or they put both guys at the Mauna Kea and and no one is at the Hapuna Prince, and they just credited it because it's part of Prince Resorts. I think it's most likely Ed is at the Hapuna Prince, perhaps in a renovated or nicer room we haven't seen online. But as to who gets the nicer place, the Mauna Kea is nicer than the Hapuna Prince.