We stayed at Sheehan's place for one week with two kids, 2 and 4 years old. We loved the place and certainly recommend it. It is great for four people, also with kids. Large bathroom with shower and bath, small back garden with large table, two bedrooms with large and good beds, tv with movie-select and great wifi. Place was clean incl under the beds.
Host Sheehan was great, we didn't meet him in person yet communication was very good and quick and with clear instructions.
Good location close to North Sydney train Station and shops, quiet street, public playground nearby.
Yes, it is a short uphill walk to the station, and downhill on your way home. We had a great time.