Holiday Inn at Yonge and Carlton now also requires a room card but it's not floor specific (yet?).
.... wow - I am shocked they changed things (must have been recently).
I don't use that hotel any more - there were definitely a lot of girls working there when I used it regularly (perhaps that is why...)
I like the Eaton (ie. the the Delta Chelsea) - because it's busy and discrete... if you get a loyalty membership, you will get upgrades.
I like the Marriots (both of them- along with the Courtyard and Residence Inn). The Courtyard at Yonge and Carlton asks for room info or key card after 12. I have never had issues with the Sheraton or Hyatt. The Hilton used to ask for room info after a certain time but I haven't hosted there in awhile.
Pantages, 1 King West, Le Germain all required key cards to access rooms beyond a certain hour.
I prefer to use nice hotels - I love some of our boutique hotels.... but I would reccommend chosing a busy location over a boutique hotel - discretion is more important than anything else.
I saw a guy on my floor at the Eaton Chelsea a few weeks ago who was obviously showing up for an appointment. I walked out of my room and he made awkward eye contact. He was knocking and knocking on a door.... I was running downtairs - came back up - he saw me and awkwardly walked away.
I think the worst mistakes we can make as providers is giving people our room numbers unless we're ready - having guys waiting in halls is exactly why hotels start cracking down.
As long as you use a bigger location and are careful not to draw attention - I doubt you will have a hard time in any of TO's hotels.