This wasn't just a great place to stay in Sydney, it was maybe my favorite AirBnB period. The location is fantastic- I didn't know anything about Surry Hills when booking and was concerned because it wasn't in the CBD, but it's so much better. You are still so close via train or bus or e-bike or even foot that the whole city is at your fingertips. Surry Hills itself is so vibrant and fun and artistic, and this apartment is perfectly situated.
The place itself- clean, cute, and modern. The air conditioning saved my life, the washer and dryer and full kitchen made a long stay a breeze, and unlike what other commenters have said, I didn't have an issue with street noise- the bathroom serves as a perfect buffer if you keep the door closed.
Add to that Don's instant responses to questions and wonderful touches like free coffee vouchers and biscuits, and boy oh boy. What a great place.
If (when) you stay, take a short walk to the Bourke St Bakery.