This was one of my worst hotel experiences ever. We came to Toronto for a wedding. Our group had about a dozen rooms rented. You'd think this might warrant some special attention. Here's what we got... Checked into our room around 6 pm on a hot summer night. Turned on the AC and went out to hang out with family and then on to dinner. We returned around 10 pm to find our room baking. Called down the next morning to report the problem. A few hours later we had a mechanical team in the room working on the compressor while we were changing into our wedding clothes (in a very hot room). OK. Mechanical equipment breaks, but it turns out my uncle had checked into the same room over 24 hours earlier and asked to be moved because the AC wasn't working. Rather than fix the problem in the ensuing 24 hours, they stuck us in the room and waited for us to complain.
When the bride and groom contacted the hotel about reserving a block of rooms for the wedding, they were informed of an upcoming renovation that would be completed in May - no problem for the July wedding. When we showed up in July, the place was a full on construction zone - complete with banging noises at 7:30 am and elevators hijacked for moving construction materials.
I could go on, but in summary, the place was very poorly run. To its credit, the staff was friendly and courteous and the rooms were clean. I'll grudgingly give them one star for that.