We visited in July 2011, a married couple with 2 children (boys age 12 and 8). Soca house is pefrect for a small family. You get the whole bottom floor of this lovely house. The house is secluded and private, with its private driveway directly across from the luminous blue water of the Soca river. Yet, it is only about 10 minutes walk from the house to a decent grocery store and another 5 minutes into the town of Kobarid itself. Kobarid is small. About 30-40 minutes up the road through the mountains and along the river is Bovec, which is the lively center of outdoor activity in the region, including prominently whitewater kayaking and excellent hilwalking/hiking around the small towns surrounding Bovec.
You can get to Bohinj/Bovec by car in about 2.5 hours, but through very small and twisty mountain roads (not good for people prone to car sickneess!). Try the autovlak -- it will be easier on your passengers' nerves, even if it does not actually save much travel time.
Back to the Socahouse. It's well-kept with a nice big yard and adjoining fields. A very pleasant place to sit and watch the clouds roll into the valley in the evening, and roll back out in the morning.
The caretaker, Mojca, and her husband are friendly and helpful.
If you are looking for a quiet place within striking distance of outdoor activity and the beautiful scenery of the Slovene mountains, rivers, valleys, and farms, consider Soca House!