I have been on other cruises but always with family. Now they can't travel as much and neither can my friends so I am choosing to fly solo sometimes to get away as often as I wish. 10th cruise, 3rd on NCL, 1st solo. I liked it a lot.
Met some great people, and never had to feel alone but also did not have to feel like I had to have my own space as I had my own cabin and access to the exclusive Studio Lounge. If I wanted to watch a show, eat a meal, or run the ship there were always people around to go with. I am sure some of those will continue.
Overall, I found the ship kinda chopped up. There are 3 floors in the middle with things to do and then 14 on up with the rest. I wish there were a few more things to do on the Lido, but found Spice to be very nice as well as deck 18.
Cabin was nice, small but still had a Queen bed as well as 2 closets with hangers a safe, and plenty of open and closed storage spaces to put clothing and other needed items. Nice size shower, toilet room is a little small and I agree the motion sensor should be set to more then the 30-40 seconds it is set to, just wave your hand around over your head and it comes back on.