The arch house is absolutely beautiful during the winter. The pools are full (the inside and outside pool) and wild flowers are everywhere. We picked a whole bunch of wild asparagus that we later cooked at home. Most people arrive to the spring from Mevo Horon. We parked in Park Canada (which you can do after you do the powertrail) and we walked about a kilometer and a half to get there. It was fun to explore the forest and eventually we made it to the Roman Path, an old Roman stone road.
Note: The spring dries up in summer. The best time to visit is in winter. Even though it may be cold outside, the water is a surprisingly comfortable temperature.