SPIRE 2016 will take place in the city of Beppu, Oita Prefecture, Japan.
The main conference will take place at Suginoi Hotel, located on a hill with a nice view to the downtown of Beppu and the ocean.
There are several options to get to Beppu.
By Plane
Via Oita airport: Oita airport is the closest airport to Beppu (approx. 50 mins. by bus).
Currently 14 daily flights are operated from/to Tokyo Haneda. Also, some regular flights are also operated from/to Tokyo Narita, Osaka Itami, Nagoya Chubu, and Seoul Incheon (Korea).
Via Fukuoka airport: Fukuoka is the major city in the Kyushu island, from which Beppu can be reached in about 2 hours by bus or train. A great number of daily flights are operated between Tokyo Haneda and Fukuoka. Also, daily flights are operated from/to other major airports in Japan such as Tokyo Narita, Osaka Itami, Osaka Kansai, and Nagoya Chubu. There are also international direct flights from/to Helsinki (starting in May 2016), Seoul Incheon, Beijin, Shanghai, Hong Kong, Taipei, etc.
By Train
From Tokyo, Osaka, and Nagoya: After arriving at one of these cities by Plane, take Shinkansen bullet train to the direction of Hakata (westbound), and get off at the Kokura Station, which is the first station Shinkansen bullet trains make a stop in the Kyushu Island. Then, change to the JR Nippo Main Line and take Sonic limited express train to the direction of Oita (eastbound), and get off at the Beppu station.
By Ferry
An overnight ferry is daily operated between Osaka and Beppu.
See here for more detailed travel information.
http://english.beppu-navi.jp (Beppu City)
http://www.visit-oita.jp/index.e.html (Oita Prefecture)