It's a good ole southern home cooking joint on the west side. The biggest plus is the prices. Not many places still have dinner meal for less than $7 with 2 sides and a tea (their dinner specials come with tea).
Food is typical. Grilled pork chop is a little dry and tough. Better off with the fried pork chop. And when I said pork chop I meant super thin cut ones. Country fried steak's gravy was the whitest I have ever seen... Thus a little bland. It reminds me of comfort food people referring to when they talk about their grannies. Nothing against grannies (or moms), but I have found out in the 2 decades I have lived in the south that their cookings are normally pretty plain and non-eventful. But knowing so still doesn't stop us from wanting granny's pot roast because it is the consistency and thoughts and memories that matter. What is off in quality at Gardenia is made up by the "sweetie/honey" southern hospitality and down home appeal.
It's a solid spot for a low budget meal. You will be happy if you have the right mindset and expectation.