We have stayed at Doris 2 or 3 times over the last few years.  It’s a large site with over 60 campsites that are fairly well spaced out.  Separate RV/powered locations from drive up and walk in campsites.  

Lot’s of great activities in the area:  hiking, climbing, fishing, wildlife and other options.  

My primary complaint of Doris is that it get’s rowdy on the weekends.  On our most recent trip a group of locals pulled in at about 10pm and partied until after 2am then left.  They were not camping at all.