The lake water is clean, steady. The boat ride is must to have. The Tibetan market is good for winter wares.
It's a relaxing experience, while boating in the lake. Regulated boat rates are very helpful for the tourists, and INR 210 for 30 minutes is very reasonable also.
Boating is provided on it by local parties and it feels awesome to have a boat ride. Go for it. Have some photos as well when on boat.