Rate my itinerary

I am thinking of travelling in early June and this is what we are planning

Colombo

Kandy 2 days (any alternate hilly location which has a better experience or is nearer to Colombo?)

Kandy to Bentota

Bentota 2 days (any alternative to Bentota which is better?)

Colombo again before flying back home

Overall 6 days

We wanted a slow paced itinerary for a short vacation. Although driving times are high in this itinerary but both the tows looked nice to visit while giving a mix of both hills and beach.

If there are any other towns that'd be better, I'd love some suggestions!