bluejeanbaby: october is off-peak as far as i know. and yes, the rate are higher during peak season.
i'm not sure if you can find a room with private t/b if you're going on your own. i suggest calling grandpa's inn if they have special rates for 1 person. i'll look for the room rates sheet they gave me and post the complete rates later. btw, this inn is highly recommended by locals for their reasonable rates and ambiance.