For an unserviced site, in a Canadian Provincial park, for C$21, how bad could it be? I've paid that much in the NPS parks for the same amenities. You'd probably pay twice that in Ontario.
If we get out there this Fall, I'd consider staying there for at least a night or two.
Mike. Comments are anecdotal or personal opinions, and worth what you paid for them.
2018 (2017 Sprinter Cab Chassis) Navion24V + 2016 Wrangler JKU (sold @ ????)
2016 Sunstar 26HE, V10, 3V, 6 Speed (sold @ 4600 miles)
2002 Roadtrek C190P (sold @ 315,000kms)