Hi Daniel
You can check this hostel in Dalvik. I know some skiers have been staying there and liked it.
http://www.hostel.is/Hostels/Dalvik/
Or check Jokull Bergmann him self:
http://www.bergmenn.com/
About the maps, there are rather new hiking maps available in 1:50.000.
http://www.eymundsson.is/nanar/?productid=b7edd128-eb26-4570-8764-f2a0f9b66fe9