Still as good as ever, I'd thoroughly recommend The Hump for its travel advice, ticket booking service, nice rooms and helpful staff.
We stayed in both a private room and a dorm; they were clean, airy and spacious. The bar's great, open all day and the sun terrace is one of the best places to sit and look out on Kunming.
The Hump even gave us travel advice well after we'd checked out. One of the best hostels we've stayed in.