S Trip Vietnam operates 22-cabin sleeper buses on the Hanoi – Sa Pa route, meeting high-end standards and focusing on providing passengers with a private resting experience. Each bed is designed as a self-contained cabin with curtains and partitions to create a separate space, suitable for long journeys or overnight trips. The standard bed size is approximately 180 cm x 90 cm, spacious enough for comfortable lying down; the mattress is thick, soft, and slightly adjustable for optimal resting position. Inside each cabin, there are usually pillows, blankets, reading lights, entertainment screens, charging ports, and Wi-Fi, ensuring passengers can relax while maintaining basic amenities throughout the journey. Overall, S Trip's 22-cabin buses aim for a "mobile mini-restroom" feel, prioritizing quietness, privacy, and comfort over traditional sleeper buses.