Hey Anshuman,
3 days are sufficient for Pondicherry. Places to vistied :
1)Auroville
2)Paradise beach
3)Basilica os sacred heart of Jesus
4)Promenade beach
5)Aurobindo Ashram
6)French war memorial
7)Domas church
Hi Anshuman, a 3-4 days trip is sufficient to explore the whole of Puducherry. I'm attaching with this message a post about exploring Puducherry, you can go through it and plan your trip
Hi
A 2 to 3 day plan would be enough.
Must see places are
1. Ashram
2. Museum
3. Promanade Beach (go in the evenings)
4. Arakimedu (this is a desserted archeological site)
5. Paradise beach ( you can go here directly through the ferry or do walk along the shore through a village)
6.Serenity Beach
7.Sacred Heart Basilica
8.Auroville
Take a two wheeler on rent. Explore cuisines in White Town. Can have sea food near Paradise beach
Have a safe trip !