Comfortable Accommodations RedDoorz at Sopo Bona Berastagi in Berastagi offers 2-star rooms with private bathrooms, showers, and TVs. Each room includes air-conditioning for guest comfort. Essential Facilities Guests enjoy free WiFi and free on-site private parking. Reception staff are available in English and Indonesian. Local Attractions Mount Sinabung is located 14 mi from the hotel. Kualanamu International Airport is 53 mi away.