Harrahs does have a good Diamond Lounge, but so does Paris (which is connected to Ballys).
The basic Harrahs room is a freshened up Holiday Inn room (it was built as a Holiday Inn). Nice, cean and well kept up, but again only HI size. The bathroom is small with a small tub/shower.
Now, if you can score a Harrahs suite, that is another story. These rooms are very nice, about double the size of a regular room (in fact some are actually two standard rooms remodeled into a suite). If ou are a higher level Diamond, ask your host to get one of these for you. As a lower level Diamond, I have not been able to get one recently.
DaveOKC