Hey
I would like to suggest Coorg as you can get trilled in adventurous activities, plenty of sightseeing places and you can also relax in coffee estates. Explore the following places :-
Madikeri Fort
Omkareshwar Temple
Raja Seat
Abbey falls Golden Temple Dubare Elephant Camp
Chelavara Falls
Spice and Coffee plantation tour
Iruppu falls Check out the following link. They provide amazing stay in middle of plantation stays. https://www.funstay.in/homestay-in-coorg