We stayed at the Base Camp for 2 nights and used it as a base for exploring the Mount Hood Fruit Loop area.  First, note that the name has changed to Gorge Base Camp RV Park.  It is right across the bridge from Hood River, Or (Note that this is a very NARROW bridge with a $2.00 toll).  The park is paved in asphalt, and each site has grass that is well maintained.  Some reviewers complain about the noise of the train tracks, but they didn't bother us.  The tracks are below the level of the park, and we quite like the train rumble.  The highway is at a higher elevation than the park, so that noise didn't particularly bother us either.  Perhaps it is just that our van is well sound insulated or we're not light sleepers!  The restrooms and shower were quite large and immaculate.  There is a gas and go next door within walking distance for incidental purchases.  A bit pricey, but the full hook ups were worth it to us on 100 degree days!