We loved many things on our "back to back" cruises but also found many things that we did not like. We have cruised with Norwegian since 1980s and we have seen many changes over time (most of them are not things we like). We sailed on October 22 from Venice to Venice and then October 29 from Venice to Rome.
We loved the ports - 2 visits to Dubrovnik, Athens and Kataklo (Olympia), 1 day visits to Kotor, Split, and Santorini.
The ship is mid-size but unlike the Sun which has several quiet spaces, indoor lounges with views, fitness center facing water - the Star had none of these (a lot of sales areas - much more than Sun). Our cabin was very comfortable and it had a large shower. The gangway was easily accessible.
Good size cabin - plenty of storage. Great bathroom!!