Apple Hostel

bathrooms were extremely disgusting, sometimes toilet paper missing.

The wall are paper thin, an abomination, I could hear every word spoken next door, let alone door slamming. Also it was mentioned nowhere that the rooms would have no windows. The way the seating area outside is not kept clean, doesn't make the hostel look very inviting either.

The AC was not working and I asked them to change but they did not , and when I arrived there I found that this is really expensive, there are several other hostels are cheaper

Everything

AC is a joke, vibrates the whole room at 130 dezibels. So basically no AC unless you can sleep under a jet engine. Linens and towels are clean, but nothing else is. Clearly never gets actually cleaned. Bathrooms moldy, ancient dust everywhere that is not the immediate bed area. Oh, and if you're white (or non-Asian) enjoy getting aggressively propositioned every single time you enter the building for everything from hotel rooms to drugs to rides by the Indians in the entrance. Because the building is notorious for being a seedy den, as I found out after coming to HK unfortunately. Never happened anywhere else in HK, just this one place. So really, just avoid it. Yes it's cheap and in a good location (except for the building itself), but just don't do this to yourself. Find a place that has an actual AC.