Service was great! Everyone was super polite and there was always someone who was fluent in multiple languages. Very clean. I loved the coed outdoor pool on the upper level as well as the same-sex hot tub and sauna rooms. Best part was the food! I have attached photos of the food I got there (all included for free with executive floor rooms).
Breakfast was amazing! I booked the executive floor room (so basically any room on floors 18-20). Executive rooms comes with breakfast by default even if you don't book one that explicitly includes the breakfast. There's actually 2 options for breakfast. There's the Nikko Room Executive breakfast on the top floor where there's a made to order menu (2 choices/day) as well as a buffet of Hors d'oeuvre style foods. The first day we ordered bruleed banana with pancake and egg and then this crepe thing. I preferred the breakfast on the second floor at the Serena All day Restaurant. Serena Restaurant had Haagen Daz ice cream and a greater variety of foods including choose your fruit juice bar, noodle station, lots of buffet style western and asian food, ham by the slice, they also had a cart they pushed around with Hong Kong style dim sum and also another cart for bread.
Booking the executive floor rooms also gave you afternoon tea (3-5pm) which was Hors d'oeuvres and they had a fridge of drinks including, juice, soda, and beer. One day they had a whole rack of fresh honeycomb that you could slice off and eat.
Executive room also gives you Cocktail hour which you can choose from 2 drinks on the menu that they make for you or there's alcohol on the table you can pour yourself. It's unlimited drinks. There's also Hors d'oeuvres for cocktail hour.
Location is decent. It's quiet but not very close to major attractions. It's close to Costco so we went several times. Trains are about a 10 minute walk away so not that close. Not many nearby attractions but that's more of the layout of KaohSiung, we walked to the train and went to the art pier as well as cijin old street, and the Love's Lookout.