Here is suggestions for accommodation for each city. Please contact the hotels directly for booking.

OSLO: 

Scandic Oslo City

Address: Europarådets Plass 1

https://www.scandichotels.no/hotell/norge/oslo/scandic-oslo-city

 

LILLEHAMMER:

Mølla Hotel

Address: Elvegata 12

http://mollahotell.no/en/

 

TRONDHEIM:

Comfort Hotel Trondheim

Address: Krambugata 3

https://www.nordicchoicehotels.no/hotell/norge/trondheim/comfort-hotel-trondheim

 

DRAMMEN:

Clarion Collection Hotel Tollboden

Address: Tollbugata 43

https://www.nordicchoicehotels.no/hotell/norge/drammen/clarion-collection-hotel-tollboden/