Day 1
I think art is the best thing to reduce your stress (especially when you travel in some old bus for more than 8 hours), and Nashik's people know how to stress out the person, and it's actually feeling good when you put your foot out of the bus and you see some really good street art, it feels refreshing.
Day 3
At trimbak city
Day 4
Igatpuri - the best time to visit this city is August to October, because there are rainy season in this months. And there are many good natural waterfall and some great views are created by nature