it is located just right next to train station. I had arrived at 11 pm and there are little people around train station so that heading to hostel at night might be bit scared. But it just took 5 mins. Don't worry.
Owners were so kind and friendly. But their English was not good. You'd better use translator.
If you are going to Green island and a budget traveler, ask them about bus schedule. Bus to wharf comes every 1hr 30mins?(I'm not sure).