I enjoyed my three months in CheckInn during my first master's student semester in Hong Kong, and I would say it was a great choice to live here.
Nearly all the roommates are friendly from around the world, and most are long-term tenants like me. In the public area, you can cook simply with a microwave oven and do your own business while enjoying the Wanchai street landscape.
In addition, keepers are responsive, kind, and enthusiastic to help us all the time. I can communicate with them in English, Mandarin, or Cantonese. They are also willing to give me trip advice or chat casually. It is actually like a home to some extent.
Also, life at the hostel in Wanchai is convenient and enjoyable. For example, bus stops, Ding-Ding railways, and MTR stations are very near. There are so many excellent restaurants, groceries, and supermarkets around the hostel, so I can have different food every meal. It is a good value for money to live in such a place in the downtown.