Subject: Tours of Barcelona and Rick Steves recommendations

we will be in Barcelona for 6 days in June and wonder about guided tours. What have some of you taken that you thought were worthwhile? Are there good ones of the Gaudi architecture? I would love to hear what you thought was good and what we should avoid. I found one suggestion for private tours with Debbi Gold. Have any of you used her company's services? Here is her website

Also, if you use Rick Steves, what do you think of his accommodation suggestions?

Thanks, Michele Missner Appleton, Wi.