I’m not aware of any cabins in wooded areas here - though I haven’t been on the south side. But you can stay at the tourist village just north of the park gate. There are several minbak and such there - if there’s anything fancier, well, I wasn’t looking for it so don’t remember. I wasn’t too impressed with the place we stayed in, and normally when visiting Gumi we stayed in one of the many yeogwans in the area between the bus station and the train station.

Don’t know about dogs - maybe someone else can add a comment on that…

–Skookum