I have just returned from a 9 day Baltic cruise on the Norwegian Getaway and have enjoyed it immensely. It was my first cruise and it surprised me for good.
It has modern facilities, spacious rooms, restaurants with quality food and very varied. There are entertainment almost every hour so you will never be bored.
Speaking to other people who had already done more cruising, the Getaway was the most luxurious ship they have ever been to and with its Freestyle policy you have all the freedom you want to eat or dine whenever you feel like it.