Top notch. Not the cheapest but the best. Food was not only excellent and we know that is so subjective. But the staterooms are over the top and with High end liquors & spirits. The Tours were excellent and we saw all we wanted to see. There are cheaper River cruises out there but the quality was made this so special. We did dock next to another river cruise and walked thru it and was so glad we did Uniworld. You can't go wrong here.
We did get a balcony but if you think you are getting more space forget it as the balcony takes up most of the stateroom. if you look at pictures of river cruises you won't see balconies sticking out on the side. Makes sense if you think about it. We went through 76 locks and there was no room for a balcony to stick futon the side.
The fitness room was very small as I am sure it is on all river cruises.