THE IGLOO HOTEL
This one of a kind hotel is actually located in Northern Finland, but is a just a quick hop,skip, and a jump from Sweden!
With a windowed igloo roof, depending on your timing (and with a little bit of luck!) you'll get a great chance to sleep under the Northern Lights!
There are two lots filled with igloos, but make sure to double check the amenities available, as many rooms can have shared showers, and as of this writing, there is no room service and no wifi. But check their website (listed below) to contact the hotel and get additional information!
The closest airport to Kakslauttanen is Ivalo (IVL), which is a 30-minute shuttle bus ride away