Our organization has 4000-5000 attendees/year. The SD CC was a bit large for our meeting - things were very spread out, with a lot of required walking, The Marriott and Hyatt are close enough but other hotels are a ways off and require crossing train tracks (I had to wait to cross nearly every time I went across the tracks). Great views from the deck facing the Bay. The chairs inside the CC were very uncomfortable (many commented on this). Not thrilled about going back - many other choices that are more affordable.