Go further up to Mammoth Lakes and go west to Red's meadow. My family of 3 just went last week. Amazing hot spring showers. Tons of hiking and horse trails. ( they have a resort close to the campground with food, ice and horses for riding) Loved it. GO go go!

Keough is alright but there's a lot of trash there and it's usually crowded. You might want to try the Long valley area near Hot creek on the other side of 395 from Mammouth. You can pretty much see all of them in a day. The "crab cooker" , "Hot tub". There are others but I forget their names. Best to get a guide book since you will need it to find these springs anyway but they are not far from the Highway. Try "Guide to Hot springs of Cal. Nev." from Falcon books. Great views! Buy the way. In the Long valley area.