I think you're going to have to up you budget..
Flowers,
In order to get a jacuzzi equipped room in Montreal where you can entertain as well as be comfortable with an overnight stay, I think you're going to have to spend a little more. I'm sure these gentlemen mean well, but from my understanding of the calibre of ladies that you hope to entertain, they will not be visiting a hotel where they may be mistaken for a SW or harrassed by guys cruising in cars regardless to whether they deem Montreal a safe city or not. I know you are very familiar with Toronto from previous correspondence. And I doubt whether you live in the US.
Try this place:
http://www.bonsmatins.com/
This is a quite comfortable bed and breakfast on the west side of town very close to Crescent street area for entertainment.
Rates start at around 199 cdn per night but the rooms speak for themselves. The only bad rap I've heard is that it can be noisy at night as the area is close to a busy street and the sound insulation is nonexistant. These are converted victorians in a residential area.
As for major chains: Marriot Chateau Champlain and Sheraton hotels are in that same general area. Rates around the 170 per night on up. Omni is also a good location. Sofitel is also a very nice hotel which can be had around the same price at this time of the year. None of these, however, are equipped with Jacuzzis.
If you go to priceline, you can get a 4 star hotel for 80USD or less, but these are the standard Marriott type room and not the jacuzzi suite you're looking for.
EBS