The distance from Panjim as per the map is 30km which is a little more than 1 hours distance.
Since the map is not really accurate as far as going to Heart Lake is concerned, I would suggest viewing the video for more details until the end
There is one particular location from the top of the hill from where the exact shape of the lake can be viewed.
Recently the main access or the area has become a private property hence trespassers are prohibited to go there
The view from the top of the lake is mesmerizing and if you are photography enthusiastic then this place is ideal for remembrance