4 days to spare between udaipur and Mumbai where should I go ?

Hey ! I'm currently doing a tour of west India and have enjoyed delhi, jaipur, Tordi village and udaipur. I Have stayed 3 days in Udaipur and have to meet friends in 4 days in Mumbai, so I am looking for a place to stay between the 2 towns. Ideally this place would have nice nature maybe a hike ? Not feeling like going to another big city. Thanks for any advice 🙏🙏