Stayed here recently for 3d2n
It is really a staycation spot as it is far from the main tourist locations in Busan, not walkable.
Taking a taxi to downtown actually isnt too bad as it is about maybe 15 mins away.

This Hilton is really more like a Conrad i feel.
The rooms were huge with either ocean or mountain views.
Even the cheapest Deluxe rooms were really nice.
Suites is just a bigger version, not that much different compared to other hotels.
Hotel is relatively new so the room decor and furnishings are still very nice and modern.

Swimming pools...wow
2 big Infinity pools overlooking the ocean, one of them is adults only.
Has mini jacuzzi pools on the side as well.
There is also a small indoor Mcqueen pool reminiscent of the old style indoor Euro pools.
Highlight of the hotel are the pools definitely.

The morning buffet spread is the most extensive, amongst the Hiltons that I have been to.
Mostly asian food and very good quality.
Even in peak travel time and busy breakfast period, there was no wait to get in as the restaurant itself is gigantic.
In the evening, the Exec lounge also had a nice buffet "canapes" till 8pm, enough to eat that I didnt have to go out for dinner.

Staff and service were really good , no complaints.
Had a nice room upgrade even in peak period.

10/10 hotel for me!