6-9, Maeda-cho, Niihama, Ehime 792-0007, Japan Phone: +81-(0)897-37-1121 Fax: +81-(0)897-37-1446 94 guests rooms 135 Max Occupancy guests, conference & banquet rooms, 5 Restaurants & bars. Niihama faces the inland sea of Japan, Setonaikai with it's gorgeous islands and other natural wonders. RIHGA Royal Hotel Niihama is one of the best luxury hotels in Shikoku, offering the highest standard of service and impeccable accommodation.