We spent 3 days at David's place and everything was perfect. Although we didn't manage to see him, we communicated by text and everything worked out really well.
The room is perfect (bed super comfy), and the private bathroom is spacious and comfortable, both are independent of the main alley so it feels very private.
We found the location of the apartment really good, just 20 minutes away by bus from central station and you never wait more than 10 minutes (3.66 dollars each way with an opal card).
You can walk to Newtown train station, 10-15 minutes, really nice hipster area with plenty of pubs, cool restaurants and cafes.
We loved our stay at Sydney and we will come back to stay longer next time.
Thank you for everything David!