TikunOlam

Here's the link to http://www.yosemite.org/visitor/lodge.html
The number to phone for reservations is 1-559-253-5635.
I'm surprised that we could still get something for less than $100/night, but it lacks a bathroom, although it does have heat. The other family advises me that a small cabin runs around $150/night, and that this is less than an hour's drive from Yosemite National Park. A room with bathroom is available for about $169 mid-week at the Tenaya Lodge, which is two miles away from Curry Village and looks resort-like, with a restaurant and indoor pool. I have a call in to the concierge to find out about ordering Pesach frozen meals.

Here are directions and driving time from the UCSD area. You can press revise to re-do the "from address." I haven't confirmed the Yosemite portion yet.
http://www.mapquest.com/directions/main.adp?go=1&do=nw&mo=ma&un=m&1rc=L1AAA&1n=SAN+DIEGO+COUNTY&cl=EN&ct=NA&1si=navt&2rc=A5XAX&did=1109980178&rsres=1&1y=US&1a=&1c=LA+JOLLA&1s=CA&1z=92093&1ah=&2ex=1&2y=US&2a=&2ac=sQ%252fq3X8VM3L3lsjQW8uiMM%252btbJfgqNVjghUFJTwgLGjzh0cl9udP1CwIthBdTl8yLEC8QxwRZFA%253d&2ah=
I need to check whether chains in the car can't hurt to have (and sometimes are required for entering certain roads, depending on the weather.)
--mkg