Absolutely recommend! We did an evening tour in conjunction with a work conference and it was super fun. In total, we had eight people in our group and the guys at SoSF bike tours made us feel very comfortable. Also, anyone questioning biking on SF streets, don't fret. The majority of the tour are on clearly marked bike lanes and along the Embarcadero. Everything was at a leisurely pace and we learned alot of cool pieces of history of San Fran. Would absolutely do it again!