Over all, Kuta Central Park Hotel was a very comfortable place to stay for 3 nights around NYE. My room was very clean and young staffs working there were very gentle and respectful for customers. Compared to the Internet back in Japan, free wi-fi was slower and I had difficulty watching Youtube, but this is not an essential part of travelling. It was fast enough to post photos on SNS, send emails, so don't worry.
Location was great: there are many local warungs around the hotel, and the energetic Jl. Raya Legian is just only 10-minute-walk away.
Breakfast on New Year's Day was good and made me feel local. It was very satisfying !
When I travel to Bali next time, I would love to stay here again !