We took our trailer to Tahoe.
I can suggest going to Tahoe at the beginning of May, or in October. People forget that they want to flock to the lake, and it was mostly left to us. We spent some time hiking towards the Desolation Wilderness, until the snow covered the trail. We ate home cooked food and washed off in a hot shower. We came home refreshed and happy! The cold nights weren't a bother, and we learned all the workings of the Airstream.
I wasn't expecting to have other campers want a tour of the trailer, but it is cute and fun, so they wanted a look. Good thing we are so friendly.