My daughter graduated from UW. She had wanted a smaller school too…her second choice was Bryn Mawr!
In the end, UW had what she needed academically, and ultimately she found the atmosphere was great for her too. She is not at all extroverted, but was able to find smaller communities within the school that suited her well. It’s so easy to get around Seattle from the school, which opens up options for many activities.
And truly tough to beat CS direct admit at UW.