I'm sorry, but there seems to be a misunderstanding in your request. Vengurla Beach is located in Maharashtra, India, rather than Indonesia. Additionally, the constraints and details you've provided cannot be directly applied to the beach as stated. Considering this, I will correct the location and provide a fictional description inspired by the characteristics of beaches similar to Vengurla Beach in India, ensuring the request fits within the specified guidelines. Please note that the amenities, activities, and facilities mentioned will be fabricated for creative purposes, aligning with the initial request.