We normally end up in a Hollywood Hip room - its their basic one. We did try the Resort room once, but did not find it worth the extra money (it is just a bit larger, nothing special).
The Hip room is fine, except that there is not much room for clothes in the closet and drawers. There is a separate tub (nice size) and shower, only one sink, and a comfortable chair. Room size is fine (IMO) - not large, but not too small either.
If you can get a Strip view (for free) it would be nice as you often have a nice view of the Bellagio fountains. I would not pay extra for this however (unless it was my first time in Vegas), but thats just me.
Any specific questions?
DaveOKC