I will stay at this hotel every time I come to Vegas. The rooms are huge, the service is great and you're right by MGM.
Yes, its a little walk if you're in the farthest tower, which I was, BUT, you can request Tower 1 and be much closer. Plus, the longest parts of the walk are moving walkways, so its really not bad.
I was in Tower 3 and actually loved just being in the room since it was so comfortable. From now on, I will only stay in these secondary hotels, since they offer so much more and its just a short walk to the main casinos.