Since the flights to Cochin is very less these days may be you can try allapey and Cochin. for more details check my page on write up what to do in both these places.
This is summer, so I will not recommend ananthagiri hill.
If you want to do some activities then I would recommend vizag for a weekend getaway.
easy to go and enjoy the beach.
Hyderabad, with its rich history and vibrant culture, is surrounded by numerous destinations that make for excellent weekend getaways. Here are some top suggestions: 1. Ramoji Film City
2. Srisailam
3. Bidar
4. Warangal
5. Nagarjuna Sagar
6. Ananthagiri Hills
7. Vikarabad
8. Mahbubnagar
9. Khammam
10. Medak