Hotel rooms can be booked directly in the INFACON XVI Congress registration form (when registration is open). The booking must be guaranteed with a credit card, but is paid directly to the hotel upon check-in/check-out.
Clarion Hotel Trondheim
Thon Hotel Nidaros
If you are looking for a more affordable option, alternatives are Nidaros Pilgrim Center which is very conveniently located in regard to the venue and city centre. Another low budget option are Singsaker Summerhotel and Trondheim Youth Hostel.