We had a great trip here over the Memorial Day weekend. We had a lovely lakeside campsite. The bugs were not too bad. There was a lot of standing water, so I expect that there might be a lot more mosquitoes once the weather heats up. The water was cold in Moosehead Lake.

Nice campsite, great location.
We have camped there twice. The last time was a site on Flax Pond. It was beautiful. The edge of the pond was pretty overgrown, so fishing was challenging. I would recommend bringing a boat or waders if you can. There is a great lobster place within a mile.