There is no AC in the building and the top floor is like a sauna! They provided a fan upon request, but did little to cool the room.
Overall, one of the best hostels that I have ever stayed in. Two downsides, there are a lot of negative signs ("No this/that", etc...) and some weird rules too, also the rooms are quite cramped. But these are outnumbered by many upsides. Friendly and helpful staff, the whole house is very clean, excellent facilities with a beautiful rooftop area. I was travelling alone and it was very easy to make friends and find people to hang out with. I would definitely stay there again.
I had trouble getting my card to work when booking in and Zach was incredibly patient and helpful. The hostel is in the most amazing location and the staff have many helpful suggestions. I wish the common areas were more social though. I was travelling by myself and it was difficult to meet people.