I wasn't especially impressed with Gemini Backpackers. The location was pretty inconvenient, although offering free airport transfer did help with this. I will say the grounds were nice, very spread out with a fire pit and other amenities. The main drawback was that the structures seemed rather poorly insulated so it was absolutely frigid inside (had to buy a sleeping bag after the first night to be able to sleep through the night without waking up trembling with cold). The staff was friendly enough, but was generally unresponsive/unhelpful. Never in a mean way, but in a disinterested way. Internet was slow enough that it was basically unusable.