There is a camp site on the Norther tip of Byron lake, that is very nice. It is kind of high up from the lake but one of the nicest I have stayed at in Michigan. Great views in the morning. There are fish in the lake, but rather hard to catch from shore.
It is a nice place to put up your tent and use as a base camp for a day. You can go to lookout point (or some name like that) the next day, and just walk around the lake close by( I have forgotten it's name) Now I am not even sure it has one. But any way. Last I was there the pumps were not working so bring a filter.
K