We are both psychologists, in our late 50s mid 60s respectively.
We live in a picturesque rural region of southern Australia, having made a sea change 18 months ago, from busy Melbourne.
We have travelled widely overseas, and and enjoy soaking up the ambience of the locations in the the countries we have visited. For Sheree, it is first time to the U.S., for me it is the second time. I visited 11 years ago, but did not visit San Franscisco.
We are non-smokers.
It is unlikely we will hire a car for these four days, our assumption being that a combination of walking and public transport will more than suffice, and your location would seem to work around that.