I traveled with my sister and this place was simply perfect for us. Its located in the middle of everything at Manly, you can walk to the port to take the Ferry any place you need, its surrounded by restaurants and bars but its located on a 9th floor so you can rest at night even if the party is still going on outside, It has an amazing view to the Manly beach.
The instructions we got from the owner were clear and they provided us with everything we needed to know as expected, its located at a secure building with electronic keys that you will get when you get there the first time and then you will have complete independence to go in and out as you please.
The place is not too big, so I recommend it for 2 people, 3 tops. It has a small kitchen with everything you may need and the supermarket is walking distance.More