We go here every summer, it's perfect. Best spot on the lake, and great for kids! A little pricy but worth it to have a kitchen and be right on the water.
There's no pool or spa but there is a beautiful lake right outside your door... The resort has a rental shop for all kinds of fun stuff-- canoes, stand up paddle, pontoon boat, etc. It is a short drive up to Truckee for shopping and restaurants.
Our Donner trip each summer is a highlight, relaxing, fun, beautiful, we have even seen bears! (Put your food away at night)...
We are not snow/ski people but I'm sure the resort in amazing in the winter as well.