Great scenery on Norfolk and lots of history if the Pitcairn History is your thing, great to talk to locals and find hidden 'stuff'. Hire a car, try and organize it with the accommodation and it will be at your stay when you get there and you can leave it there when you leave, no hassles with hire company. Take some food with you if you are in an apartment with cooking facilities, take your crackers and vegemite, stores are sometimes a little empty and quite expensive for staples.
We almost seemed like the youngest couple driving around ( and we are 60 + ) and as we surf had our surfboard on the hire car looking for surf.( take soft racks as the cars are small ) and found a few hidden surf spots around the island. The water temp was 16-18 and really not too cold, not enough for a steamer.
Buy your alcohol on the way out as the duty free is not available on the way back. Lots of fishing just off the island, the fishing charter guys get a few people on board, saw one boat go out with at least 8 on board but came back with lots of, they call them Trumpeter, but looked to me like Red Emperor.
The accommodation was quite good at Broad Leaf villas, the people running the villas were very friendly and keen to let you know the ins and outs of the island. The rooms are quite modern with all facilities although no air-con as they have electricity restrictions on the island. Lovely welcome fresh rolls and a salad in the fridge on arrival.
So all in all a great place to get away and really not that far from home. Would recommend wholly for a short holiday.