I have been reading posts that suggest not staying on hotel circle. I am wondering why? I will be in SD without a car for 3 days. I want to sightsee using the "hop on hop off" trolley. Those hotels seem convenient for that. Would you suggest other hotels in the Old Town area that would be within a very short walk to the place where the trolleys begin??? I am really in a quandry. Thanks for your help...I sure appreciate it.