I'm headed to a conference in San Diego in a few weeks and wanted to get some advice from the natives. I'll be staying at this hotel. If you are familiar with the part of town where this hotel is located, I'd appreciate any tips you have about that area. For example, do you think that there are places to eat and shop within walking distance, or do I need to rent a car? If I have some free time (which I think I will on the first day), what site(s) should I try to see? This would probably need to be things that don't take too long, definitely no all-day attractions like an amusement park.