Have only done suites with Norwegian (ended up in a suite by accident a few years ago when we had a 2 week cruise, but ended up only being able to do 1 week because of schedules, so travel agent arranged for the better cabin for the price paid). It truly spoils you! We were fortunate to have the same butler that we had on a New England cruise last year (Roy). Roy is an asset to NCL!
Being in a suite also gives you priority boarding and tendering, which is very easy to get used to! They even save you seats for the shows, but the seating is not in the best viewing areas. We received our luggage tags with a note to call NCL and arrange some of our needs/wants prior to boarding, which was nice, too.
Cruise reviews I had read about the Star made me nervous, but we had no issues with the room or ship decor. I believe it had been updated last year, so that probably took care of what had been expressed in prior comments.
The cabin had plenty of room and a wonderful view out the back. This particular suite has a wrap around balcony that is one person wide, but four of us could stand side-by-side easily. Our balcony had a door between us and 9236, which our friends occupied, so that was pleasant. Shortfall of balcony was lack of depth; hard to sit 4 of us and play cards, but since it had loungers we could sit 2 on each and still converse. Room has butler and concierge service, which NCL does quite well. (Although they have changed the number of concierge personnel available per suite, so we went to our concierge more than on previous trips where they would come to us.)