Not sure if there are any deals at the minute but for my honeymoon we went to Reykjavik, Iceland. Stayed at Hotel Borg and price was ridiculous, over £230 a night ( but again it was honeymoon and we wanted to spend loads even though it was a stupid thing to do, hehe).
My sister went shortly after, they booked through the icelandair website cause they had really good cheap cheap offers on, they stayed at the Hilton.
Things we did whilst over there:
saw northern lights
trekked through lava tunnels
horse riding
Blue Lagoon (thermologically heated outdoor pool - you have to try this at some point in your life)
Went to visit the set of kids Tv show Lazytown
waterfall and geysir trip
dined at The Pearl, it's classed as one of the best rooftop restuarants in the world.
This time of year is a good time for seeing the northern lights, or if you go in summer you'll be able to enjoy the sun, do some whale watching and even go dog sleighing!!
Word of warning though food and drink can be quite costly but I thought to mention this country as it's such a beautiful place and well worth the trip