Gus's Keystone Family - Mount Joy

The service and food here is really good, but something is SERIOUSLY wrong with their water, both the water and soda has some horrible taste that will unfortunately make us unable to return here. Again the staff is nice, the food is good, the atmosphere is good, but the water is so foul I just cannot go back.

We've been customers since this restaurant opened as the Keystone Diner over 4p years ago. We frequently stop here for dinner after a long day or bring the family to Sunday brunch. Keep an eye out for the specials. I had the Pastisstio Greek salad, which was excellent. Mom settled on the smaller portion option, broasted chicken, mashed potatoes, dinner salad, and the red beet salad. We both had hot tea, which is brought in a warming carafe. Jesse, our server, was friendly and attentive. Don't miss this locally owned family operated gem! (The reason for the atmosphere score is because the restaurant is usually loud and cold, bring a sweater. After an update years ago, the local, cozy feel was replaced with minimalist-like decor; which adds to the cold feeling but is probably easier to maintain. The restaurant is always clean, the food is very good, the prices are reasonable and everyone is friendly.

Found this nice family restaurant many yrs ago when we travel to Roots market. Never disappoints with great food a great price!

I usually go here for breakfast, although they serve it all day long. I'm not an early morning person. They give you lots of food and it's always good.

I love this restaurant, it 's my Go-To especially when I have friends visiting from out of town. The menu is extensive and includes many choices from breakfast omelets to full dinners, service is great, prices are reasonable, and the chocolate desserts ... yummy. They have a children 's menu, too.