Wake up Sydney has a great location close to Central station, and therefore a great connection to public transport to explore Sydney. The front desk was very helpful regarding check in and storing of baggage. We also loved the bar- and cafe- facilities in the building.
However: we found that the room was a lot smaller than the way they were portrayed in the pictures. There is also little to none sound-isolation, despite there being a lot of noise in the hallways at night. Keep this in mind if you are a sound sleeper like me.
All in all we felt that we got great value for money, and that this is a great hostel for exploring Sydney.