Last year I stayed in the brand new Palazzo which is next door to the Venetian and owned by same group. If you say you are playing in the Deep Stack Extravaganza in the Venetian then you get a very big discount on the rooms (pay less than $100 per night). As each tourney in the DSE plays over more than one day I don"t know how they work out how much you played but I got the impression that even if you only played once, you"d get the discount for your stay. This is fantastic central location, great pools and perfect for the Venetian card room. And the DSE provides excellent reasonably-priced tourneys. Btw I found the cabs to the Rio varied from $12 to $20 plus tip which can mount up if you want to go back and forth. The Rio card rooms during the WSOP were overwhelming (literally thousands of players) and I wouldn"t choose to play there except in the actual WSOP (blatent brag, too).
Did you, yourself, say to the Palazzo front desk clerk that you are playing the DSE? Was this at check-in or check-out?
Did you, yourself, actually pay less than $100/night for the whole of your stay?
I don"t dis-beleive this may happen, but your post is a little vague.
This type of advice always appears in these Vegas tips type threads. I think the best advice regarding any type of comps discounted room bill, is -
Always budget to pay the full ammount, any discount you do get is a bonus.And remember you will only ever get any discount if you booked directly with hotel.
PS. Any one planning on playing any V DSE tournaments and wanting to stay at the Venetian or Palazzo, you might want to try contacting dcarp* (Dan Carpenter), via the AllVegasPoker.com forum, for advice on room rates. Dan is a TD at the Venetian.
*Just noticed that there is now user called "The Venetian Poker Room", who is apparently the "Official Venetian Poker Representative".