This is one of my favorite places to get brunch with girlfriends. Their patio outside is gorgeous, although if I'm being really honest, it is the bottomless bellinis & mimosas that keep me coming back!
The patio outside is a great place to sit with friends for a while and chat. It's really beautiful, it's never very crowded and the service is wonderful. I have never sat inside - why would you, on a sunny Vegas morning?! I've never had to make a reservation for brunch. The staff outside has always been very accommodating, even when a few of us have sat there for several hours.
The menu is a little expensive but it's very good. I rarely try a French Dip because the one on the menu at my parents' restaurant is so damn good, but Hearthstone's is honestly the first one that I have found that is legitimately good. I have also tried the salted caramel french toast that was delicious and gorgeous. I've never eaten at the restaurant for lunch or dinner, so don't know about that menu, but the breakfast menu is great!