PP is to be used only outside India, otherwise you'll get charged. That's why pp is smart enough not to show you Indian lounges in the list.I don't think Marquee gets you access to this spa. When logged in to PP account, it shows an error and you can't search it either.
Also weirdly, unable to find any international airport lounges in India, like hyderabad airport lounge in int terminal is missing from list. Only foreign ones showing.