It is a manless check in, you have to call the number by whatsapp and he will give you a code at the key locker and tell you your room. There is a small restaurant beside and the taxi to airport cost 15euro booked by the owner at 3.30am, taxi is only 5 minutes. Would recommend to anyone who has an early/odd timing flight.
I recently stayed at Main Square Hostel and had a great experience. The hostel is clean, with good facilities. They have a kitchen for guests and provide a good breakfast. Plus, the location is right in the heart of the city. Recommended for budget travelers. 🌟