Complex sentence: It is situated on the south shore of Clear Lake, the largest freshwater lake in California, at the base of Mount Konocti, and features a spa, a miniature golf course, a marina, and two Olympic-size swimming pools.
Split into simpler sentences: It is situated at the base of Mount Konocti on the south shore of Clear Lake, the largest freshwater lake interior to California. Its amenities include a spa, a miniature golf course, a marina, and two Olympic-size swimming pools.