We had a great time there on our 30th wedding anniversary.
Erakor is one of the most picturesque islands I have come across. It is quiet and relaxing with snorkelling to be done right outside your front door.
While the rooms are basic, this is made up for by the tranquil setting, the relaxing boat ride to and from the resort, the excellent dining, the white sands, the colourful water and the friendly atmosphere. Its a short boat and taxi/bus ride to Port Vila with its attractions and activities.
I would happily return sometime.