After Salsa03's bad experience with the Ovens National Park in NovaScotia I'm afraid to chime in with a recommendation but since I have been to a good majority I will. Keep in mind all Provincial parks are into conservatism which includes not cutting trees, no burning of fallen limbs and most everything is overgrown along shorelines so having visibility of water can be a challenge.
All have decent hiking trails, onsite stores and are very well kept with clean, mostly modern facilities. Sites for the most part are very large and have a good canopy of trees for shade but not all.
Wood, As in the US you can't bring any in but you can buy it locally or from the park itself. Bags cost between 5 - 7 Bucks CDN. I can use two bags a night for my burns..and that's for about 4 - 5 hours.
Fitzroy Harbor if you can get one of sites 252, 255 or 265 in the two rivers section it will give you a view of the Ottawa River. There is a Dam across the river so occasionally you can hear the rush of water when they open up the gates. Fitzroy is a large campground with a multitude of sites and terrain to choose from. I like the water views but if you like to be a little more secluded then something up in the Pinegrove Section might be more to your liking.
** It's also about 30 Minutes from Downtown Ottawa so if you were interested in checking out the Nations Capital / Parliament buildings your in a good spot. You could also visit the Rideau Canal, National Arts Center and even take a quick trip to Quebec for some Beer Froid (Cold)
Bonnechere - I was just there and can't wait to go back. You have a choice of Lakeside, and by that I mean a two minute walk to a gorgeous beach on the Lake. Or if you like a little river that winds and bends around campsites it's perfect for a kayak or canoe adventurer. Again, Sites are good size but driving around the campground when pulling in or leaving can be a bit tight.
Sharbot Lake - Another favorite of mine but it's close to a road so you do get traffic noise. Otherwise nice CG, big sites and has a nice beach area.
Charleston Lake - Nice campground with big sites. You can get sites adjacent to water but the overgrowth knocks it down a few notches for me now.
Lake St Peter, I went once and got stuck beside a Septic Bed Vent. Was good most of the time but every now and then...phewy. Otherwise It was ok but I don't think I'll go back. Sites seemed to be crammed together in areas or back in sites provided challenges dodging posts or trees.
SandBanks - I have not been there yet but there are lot's of people rave about this park. It has a bit of everything including Sand Dunes along Lake Ontario.
Presquile - I'm heading there Sept 29th for a 3 night stay on the bluff looking out over Lake Ontario. It will be my first visit so I'm excited as I hear a lot of good things about it.
Turkey Point - Large sites, lot's of poison Ivy so you have to be careful but it gives you access to the Beach area which you have to hike to or just take the car.
Point Farms - Another Nice campground on the Shores of Lake Huron. Beach is really nice but again it's a fair hike to the beach or you just drive to the parking lot, LOL. The Hike involves going down a huge set of stairs to get up and down the bluff. Dam near killed me so I decided to drive after one attempt.
Algonquin Park CG's
Achary, Love this place. Enjoyed numerous camping trips when I was younger but there is no electricity. That said, lot's of hiking trails in the area and around the park itself. Very peaceful. I have not been to any others in Algonquin but I'm sure the same could probably be said for any and all CG's in Algonquin park.
As mentioned above, go to the Ontario Parks website and use the map to look at the sites. They give you Site Dimensions, distance to Electricity, shade/sun, privacy rating, soil type etc.. Pictures do help a bit.
Here is the site for our National Parks.
If you should in fact visit, have a good trip.