A certain number of rooms at Okura Frontier Hotel Tsukuba located close by the Tsukuba station are secured for this event for 2 nights, June 25 and 26, until the end of May.
We recommend you to make a reservation asap through the email as below.  
Please write "SuperKEKB Ceremony" on your request.

Contact information:
Ms. Hisamatsu
OKURA FRONTIER HOTEL TSUKUBA
E-mail: hisamatsun@okura-tsukuba.co.jp 

<Room Type>
Single (non-smoking/smoking)　8,900yen/night
Twin (non-smoking)　 10,800yen/night
Double (smoking) 　10,800yen/night
Deluxe Twin (non-smoking)　 11,800yen/night

※This rata is incl 8% tax, 10% service charge and Breakfast.

Other Hotels in Tsukuba

http://www2.kek.jp/rso/eng/Map/hotel.html