The Mellotron Group

My wife& I are flying to see our daughter in L.A.labor day week.We';re 
planning on driving down to S.F.for a few days.I know I want to visit 
the Haight-Ashbury section but wondered if anyone has any other 
recommeded sites to see while there?Also if anyone knows of  a 
nice/cheap hotel in the city or on the outskirts?
Please e-mail off-list with any ideas.
Greatly appreciated.
Thanks,
Pete