This is a generic comment.
I never understand why, when someone is asking for specific Marriott properties & say they don't want to stay on the strip, people then recommend non-Marriott properties on the strip.

Do people not read what is being asked?
I'm assuming if someone only wanted Vegas recommendations they would post in the Vegas forum, vs posting in a hotel forum (whether it be Marriott, Hilton or Westin) asking about a specific property.
To the OP - you have 2 links in posts above & you can also do a search in this forum for other links if you're interested/the 2 don't provide the info you need. But overall I think Ren or LV Marriott are your 2 best options, especially if you're there for conferences.
Enjoy your stay. Cheers.