Although it's certainly do-able/walkable, it's still a 'pretty good' walk from Tuscany Suites to Bally's/Paris. I'm also not certain if you can access the monorail from outside of the casino at Bally's... so you may need to actually enter the hotel and then traverse back to where the monorail station is.
The 'issue' with the monorail is with the location of the stations... they are not in prime real estate locations so it's usually a decent walk from hotel to the monorail station and then a decent walk from your monorail stop to wherever it is that you ultimately want to be. It's OK for a trip here and there but it's not really that convenient in my opinion for frequent use (and i'm somebody who actually likes to walk).
I know the Sahara has recently undergone a major renovation, but i'm not sure if the casino floor and/or rooms still have a smokiness to them.
The 'somebody recently won for $80' is not necessarily for your own dates. As well, what if you were to win a different 4 star hotel in the zone?
Ignore this, it's just marketing. It's certainly possible that the hotel only has 50 rooms left, but the more likely scenario is that this is only the number of rooms that have been allocated to Priceline and the actual hotel has more available (and will likely give PL more inventory should priceline sell all of the rooms they have been allocated).
So i think the Tuscany Suites and/or Sahara both have potential issues with them, but you'll have to weigh these issues vs. the downside(s) of an apartment rental since that comes with many compromises as well.
Thanks for using the PRICELINE and HOTWIRE links on the board.
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