Approximately how much would I need?

how need 2 day trip sf. i'm orange county , flying in january , needing stay in good, inexpensive hotel (not hostel). since can't bring food or water on plane need factor in buying food there , money muni , bart. friend san mateo visit though , drive me around little. in general, how need. don't want spend more $380-$420.

how need 2 day trip sf. i'm orange county , flying in january , needing stay in good, inexpensive hotel (not hostel). since can't bring food or water on plane need factor in buying food there , money muni , bart. friend...

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