We spent an enjoyable week with the Hotel Nikki.
Friendly and efficient staff, good buffet, the excellent Italian restaurant (with live musicians), very good rooms and located next to the beach, great bars and a myriad of high-quality spa massages.
Why the four star rating, .... a little harsh perhaps but I found the hotel very noisy late at night/early am as noise echoed off the tiled walkways with foot traffic, and the relatively large gap under the door also let conversations intrude easily.
Our stay included two one hour complimentary massages, a discount off the restaurants and 1M rupiah off the food and beverage bill (although I can’t recall seeing that been credited back as part of our unused deposit).
I would stay at Hotel Nikko again.