Napapiirin Saarituvat

auto-translated: A cabin only costs €7 more than a tent, and with electricity, a kitchenette and crockery ... it's really worth it.
A bit far from Rovaniemi, so you'll need a car.
Lots to see in Rovaniemi.
Very friendly staff, spotless sanitary facilities.

Official address is Kuusamontie 96,96900 Saarenkylä. But google maps find the place with address Kuusamontie 432 (google has a program failure in the spot)

auto-translated: The place itself has a nice location on the river, so you can have a nice view. But when there is a lot of traffic, there are camper vans in front of it. There are only three toilets for the women (which are super narrow - sitting down becomes a challenge) and for all together currently only three showers in operation. Unimaginable for the high season. The sanitary facilities are otherwise ok and mostly clean.
For children, the place unfortunately has nothing to offer. There are two swings but they were not so popular with our son. Two dart boards are hanging out. That was quite good. The pitches are very narrow and with electricity somewhat experimental if you come too late. Then supply over one of the huts or the cable runs over the path and thus everyone drives over it. All in all the most expensive place so far for us, but unfortunately not justified. But the owner is very nice and speaks good German.