Sprague Lake, west of Spokane would probably be the best shore access, but there are a lot of other lakes, mostly either down by Cheney, or North of Spokane, that hold bass. I think the Cheney area is the best scenery, if that counts. Chapman Lk. has a resort and maybe rental boats, and it does have bass. It's a pretty small lake, tho. Long Lake is the impoundment of the Spokane River, and it has LM and SM. There's a resort at Tum Tum, and they may rent boats.
It's been years, but I had no luck finding any detailed maps, and the state roadmap doesn't "git it". I was visiting my cousin there, and called some "Sporting Goods Stores". All they had was soccer uniforms.
I'd suggest getting a DeLorme Atlas & Gazatteer from Fisherman's Marine & Outdoor.