If you enjoy the outdoors, admiring nature close up or from afar, book Helen and Shaun's space. It is comfortable, has detail guides on the area and the property, and is just one of the most beautiful spaces we have ever stayed in. Each day we took the 15 minute hike on a path behind the property where we were treated to amazing views of the peninsula and surrounding area . The town of Portobello is cute and has everything you need. We ate twice at the Portobello Hotel - great service and food. It's an easy walk into town, and a good workout on the way back due to the hills.
Helen and Shaun are available if you need them but otherwise it feels very private, despite the fact they are right next door. The space is spotless and chock full of reading material about the area.
I took the ferry to Port Chalmers one day - aside from a chance to be out on the water, and a few walks that provided great views...I don't recommend. That being said, it's an inexpensive way to get out on the water, and Rachel who owns the boat was great. She even took the time to point out a few birds along the way.
Allen's beach is a great spot to see sea lions, and and Hooper's Inlet to see birds.
Enjoy your time here.