Hilton Fukuoka Sea Hawk provides complimentary shuttle bus from Tōjinmachi station every 20 mins (service not available on weekdays), but the timetable is useless and I ended up with waiting for the bus over 40 mins this time. I suggest everyone to take a walk (20 mins) or taxi (5~10 mins depending on traffic) if you are planning to go to the hotel from Tōjinmachi station.