I will try my best to be honest. First let me say I will never stay here again.
Pros: Running water, close to Niagara Falls. If you don't mind the smell of cigarette smoke, and old then you can stay here.

Cons: Very dirty, room smelled really bad, very run down. Had reservations for several nights however, we only stayed one night. Ceiling was falling, bathroom had mold everywhere, the carpet was old and dirty. The office was closed when we arrived and when we left. No soap, no shampoo very few towels. This hotel might be okay for some people but not for me.

Your vacation will be ruined if you stay here. A quick summary:
-they charged my credit card up front for the room before I'd even seen it, which should have been a warning bell
-human big-toenail next to the bed in full view on the supposedly vacuumed carpet
-largest millipede I've ever seen in the bathtub
-under the pillow of the "made" bed I found a budweister bottlecap and a half-used bottle of personal lubricant
-air conditioner broke down after running for a few hours. Front desk said they are all like that, and blamed the maintenance guy

I was willing to overlook all of that, because the family that runs the place seems to be so nice and earnest, and they are obviously struggling to make ends meet and turn the place around. However, even that is now suspicious to me for the following reason:
We decided after the first night of a two-night stay that we needed to get out of there. However, we didn't have another place booked, so we thought we might give it another try. So, we spent the day at the falls, doing some of the cheesy side-shows etc. At lunch, however, I found another room closer to everything, and booked it on the spot. We returned to the advantage inn, packed, and I went to see if I could get a refund for the second night (it was around 3:30pm at this point, well after check-out time, but I thought I'd try). The owner immediately obliged, running my credit card while saying "no problem, no questions asked". However, when he handed the machine to me, I noticed that it said "purchase" on it, for another night's stay. I pointed this out to him, and he appeared to get flustered, saying he was sure he had set it for a refund, and it was a good catch on my part (his words). In the end, though, he fixed the problem, and I received my refund for the second night then went on to have a wonderful trip in a clean room elsewhere.