Kirsti is a great host. My baby daughter and I had to book last minute due to our hotel letting us down, and she was a fast and friendly communicator.
Her studio is spotlessly clean, and has all the amenities you need. She even left a high chair and beach toys for us. It's in the perfect location in manly - right in the heart of things. The balcony is also great to sit out on and listen to the lorikeets in the evening.
I would definitely recommend Kirsti's place to anybody looking for a base from which to explore Manly