Convenient location, clean.
We stayed here for 2 nights for Columbus Day Weekend. The wait in line took about 20-30 minutes to get checked-in (get there early on holiday weekends!). We wanted a non-smoking room with a king-size bed, but I guess they were booked for the weekend so they only had a smoking king when we checked-in.
Despite the smokey smell, our room was clean and very spacious. The bathroom was huge and there were two sinks (one inside the bathroom, one right outside), which made it convenient when sharing with the bf.
Located in the middle of the strip, Bally's is connected to Paris and right across from Bellagio (which is connected to Ceasar's Palace) which was pretty awesome.
On another note, they have a kiosk right by the front desk that sells pastries and drinks. I had the red velvet cupcake (about $4) and it was THE best red velvet cupcake I have ever had! It was SUPER moist and huge! The icing was a little too sweet, but overall it was the best red velvet cupcake I've ever had. SOOOO GOOD!!!
I'd stay here again.