I have stayed at the Leeds Marriott numerous times but have only been upgraded to a suite there once, and it was not the Rochester.
The hotel is very well kept but it's not modern nor recently refurbished. The property is well managed so rooms are clean and everything works. The style is very much 1990s Marriott. The exec lounge is very good with strong breakfast and evening food and a lengthy help yourself 4-hour free beer and wine offering. Staff are very pleasant. The hotel bar also serves as one of Leeds favourite city centre haunts and is therefore a busy place to be, and packed on weekend nights. Both the hotel restaurants are very good, as is the bar food too!
I like the Leeds Marriott and think it offers good value for money. Don't be put off by the TripAdvisor naysayers, but don't expect a deluxe nor modern stylish suite. Comfortable, clean and competent is the best description, though locals will tell you it's one of the best hotels in the city, and I'd think they're right.