If you don't mind paying for the R44 (~$550/hr) then I'd recommend Sirius, www dot siriusflying dot com. If you want something cheaper then the San Carlos people may be better. I don't think anyone round here has R22s, though Google may find something.
As for options... we're surrounded by mountains! The Sierra Nevada is a bit over an hour away by heli, you can fly into Tahoe or over the peaks to Mammoth. The north coast is very pleasant, Mendocino is a nice town if a bit touristy, there's an airport a few miles away but no rental cars any more, you might be able to find a hotel that would let you land in their parking lot for lunch. North of SF rapidly turns into virtually uninhabited forest, which is impressively vast to fly over though not of any special interest apart from that. East of SF is the central valley, whose main positive feature is that it makes you appreciate the benefits of flying rather than driving (well, and it produces about 70% of all the fruit grown in the US - jolly useful but you don't need to go there for that).
There are loads of interesting places to go but the "spectaculars" are Big Sur, SF itself, the Sierra Nevada. After that it's really a question of what kind of thing you like.
n5296s