The resort we stayed at (link here) kakslauttanen was magical. It was so snowy and cold, I have never been that cold in all my life. It got down to -4 C. I am so glad me and my girlfriend got snow gear. I personally spent what I thought was too much money for cold weather gear. Every penny spent was worth it and yet I was still cold. I purchased these ugg boots for men called Butte ( I didn't catch em on sale). These boots were warm and yet the reindeer ride I was so cold. When the clouds parted and the aurora was shining I had to periodically get into the tent that was set up and get next to the fire.
I have lived most of my life in southern California where it doesn't get that cold. It gets pretty cold up in the Sierra Nevada Mountains. The Mojave desert not so much. When I was a kid it snowed a foot deep out in Lucerne Valley CA but still nothing like Finland. The coldest I ever got was 0 degrees -20 with the windchill in Ft.Sill Ok. Kakslauttanen is just cold all the time in February.
Preparation and seeing the Aurora made it all worth it. Venus was in the night sky during our adventure in Finland. It was so bright I thought it was a man made light tower on some mountain. It seemed like a distant spot light. The night sky in Ivalo was majestic.
We only stayed one night in the glass igloo. Then we switched over to the queen suite for three nights. It has a private sauna and this SoCal guy was in it a lot. It has this shower by this very large bathtub. I have never felt so pampered in my entire life. The doors on this place (actually every place) are those big freezer doors. It keeps so warm in there. The room has a jacuzzi on its own private deck. Me and my girlfriend went in it at night when the temp was a -1C. We couldn't stop laughing it was so cold. The water was nice at 80F but it was just ridiculously cold. We kind of had to do it in our birthday suits to say we did it. We ran back in as fingers were sticking to things