If you like Fremont St, do yourself a favor and stay in the Rush Tower at The Golden Nugget. The rooms are super-nice and very reasonable on the weekdays. Will go back there time and time again!!
If it's a romantic trip, best stay is the Rush Tower. If it's a "dudes" situation- Gold Tower is best-- the Rush only has king beds, no doubles. Carson Tower is the best value for people with kids.
Most definitely stay in the Rush Tower. Our bedroom at Carson Tower smelled so bad that we asked to move to another one at the rush tower. Looks like a completely different place. Way better!!
If you're staying at the Golden Nugget, pay the upgrade and stay at Rush Tower. The rooms are modern and updated. Way better than any other rooms in the hotel.