Hello Princess 719. I have not been on Star Princess but I have been on her sisters, Grand Princess and Golden Princess. One of the reasons I have stuck with Princess for over 30 years is the consistency over the entire fleet. As penny3333 says, the ships are always immaculate, in good repair, and the the food, service, accomodations and entertainment are always excellent.
As for your mini-suite, you happen to be in my favorite part of the ship. I love the minis on Emerald Deck because the balconies are covered; and I have never heard a sound from the Vista Lounge below. Yours, E719, is particularly attractive because it is the first mini in that row; you only have a neighboring balcony on one side, and it is downwind, so you will have no problem with neighbors who smoke on their balcony.
You've picked a wonderful ship for your first cruise.