Blue Diamond Retreat is a charming 3-star hotel nestled in the picturesque area of Phong Nha, Vietnam. Opened in 2025, this retreat offers a serene escape with just 20 thoughtfully designed rooms, ensuring an intimate and personalized experience for every guest. With a remarkable guest rating of 9.7 out of 10 based on 11 reviews, visitors can expect a warm and welcoming atmosphere that highlights the beauty of the surrounding landscape.