We loved our four night stay at Cilla's. We wanted to be close to town - there are regular metlink busses going into town from a bus stop in close walking distance and the ferry from Days Bay. To walk there you have to walk parts on a quite narrow road with cars going close past you at speed (not suitable for kids).
We went to Wildfinder at the southern end of the sealed road (approx 45mins leasurely walk) and rented bikes to go out to the lighthouses. You can easily spend a day exploring out there.
We found Cilla's space friendly and spacious for the two of us. It might be a bit tight for more, especially if you are intending to eat together around the table, which is against a wall. The main bed is pretty soft but still comfy.
The electric blanket and heating are doing a great job to keep you cosy warm. If you have a bigger than small city car and loathe backing out of narrow spaces, I suggest you park on the street and bring your bits in.