If you want an amazing horse riding experience in the Texas Hill Country, I recommend Sister Creek Ranch near Boerne.
Ten strangers came together to enjoy camaraderie, organic, locally sourced food and 700 acres of well marked and wild trails to the top of Pop Rock. Some of us stayed in well appointed cabins and others camped in their horse trailers at the RV hookups at the shores of Sister Creek.
Owners Bruce and Beth bartended for us and serenaded us with classical guitar.
I can't recommend Sister Creek Ranch enough for a great Hill Country getaway.