Hi, we are planning on visiting California early in September and intend spending 5 nights in SF before heading off to explore Yosemite, Big Sur, Monterey etc (I also intend studying their forum pages soon). Firstly though I need to get our SF base booked and think probably around Union Sq sounds central but am finding that quite a few of the hotels I like the look of don't necessarily have A/C or safes/security boxes in the bedrooms? I note that it can be cooler in SF than other parts of California so wonder if A/C isn't so necessary maybe? I'd also prefer in-room security so we don't have to carry our passports with us all the time. I feel like I'm going round in circles looking at the moment so would welcome any suggestions. Thanks.