Staying the first and last days of your main trip should be ok. You could get lucky and have a room like the other poster did! It's not a terrible place, mind, just getting old and shabby. The location is right! Just take a LEFT out of the drive (west on 192) to a right on Sherberth and zip...you are on WDW property (near AK) before you know it.
Alternatively, you can take a right and then the exit ramp for WDW is just down the road to your right. Either way, it's close!