The Conrad in SIN is pretty good, both breakfast and evening drinks are pretty good.
The SIN Hilton is not as nice. The building is older than Conrad.
The Montreal Bonaventure Hilton, Chicago (both Tower & Palmer House) are OK. Typical North American breakfast. I was told that Palmer House gives complimentry drinks between certain hours, but I had to fill out a form with the amount, but never got charged!
Toronto Hilton has nice drinks and they have a pool table in the lounge!