There are bunch of calm and secret beaches in south goa, few i have listed here. Bogmalo beach is very near to Dabolim Airport
Mormugao port Hollant beach Kakolem Beach
Valsao Beach
Betul beach
Benaulim beach few of them i have personally visited so you must enjoy secrecy over there. South Goa generally starts ahead of Colva beach you will find many places with secret outskirts, Paolem is well equipped with many 5star resorts. Although you will need lots of efforts to find beaches listed above but if you travel by 2 wheeler which can be easily hired in Goa, you will not find difficult with Goa locals are very helpful and tourist friendly. Wish you best
Hi! Here are some suggestions for unexplored places in Goa that you can explore: 1. Conco (Monkey Island)
2. Galgibaga Beach
3. Pequeno (Bat Island)
4. Sao Jacinto Island
5. Betul Beach Here are a few trips you can check out for more suggestions on unexplored hidden gems of South Goa.
Happy Travelling!