TLDR: 10/10 would stay again.
The Nest is tucked away on Newcastle street but was easy to find, I do recommend getting dropped off on Money street or Lindsay street(near the IGA car park) with Newcastle street being quite busy depending on your check in time. The room we stayed in was neat, clean and tidy, the balcony was a nice change, having the balcony doors open whilst eating and watching TV whilst in the room, was refreshing. Rooftop area and shared kitchen were clean and well maintained. A short walk to restaurants, bars, museum and the city. Keep in mind it is in Northbridge, so the nighttime sounds of the weekend revellers, foodies and all sorts will definitely be heard if you have the balcony doors open or the occasional siren with the balcony doors closed, again, it is in Northbridge after all.
I would stay here again.