If you're looking for budget accommodation in Hong Kong, check out Ah Shan hostel in Mongkok area. It's very convenient, close to a lot of small cafes, Ladies' market, sneaker street, gold fish market, etc. It's right smack in the middle of everything and the MTR is only a few minutes away. The unit is clean, staff are friendly, good enough wifi. They provide soap and shampoo, but towels are not free. Checkin and checkout was a breeze. Overall, it was a wonderful stay.