My friends and I had a wonderful time at Frank's VRBO.
The beds were comfy (except that the bunk beds were a little creaky - probably ok for kids, but disrupted the sleep of the 2 adults who shared that room.)
Kitchen is small but well-equipped.
Living room is large, with very comfortable furniture. It has a "cottage feel", which is part of the charm.
Lovely back deck, with plenty of room for outdoor dining.
Great fire pit overlooking the lake.
I would recommend bringing your own watercraft, unless you are used to sit-upon kayaks and paddle boards.
Calabogie Lake is very popular due to its proximity to Ottawa. Expect to see other cottagers and lots of lake activity in the high season. We were there in late September and didn't see too many people on the lake, even on the Saturday, so it can be a quiet get-away in the short off-season between summer and ski season.