Based upon reviews on Yelp I was expecting to be disappointed by the Monte Carlo, but the price was right and I didn't plan on spending much time in the room anyways so I went ahead and chose to stay here. I got there at night and check-in was a breeze. No line and was in my room in around 10 minutes.
The room itself was nothing special. Modern decor and it was clean. One complaint was the toilet in the bathroom sounded like a jet engine when flushing and when you turned on the water in the sink it would splash all over the place unless you were careful. Another minor issue was that the room door wouldn't open at times and I would have to insert the key a half a dozen times or so to get it to open. Kinda annoying but not a deal breaker. There's no Wi-Fi available, but wired internet service is available and included in the $15 a day resort fee.
The casino is of decent size and during the day they have $5 blackjack tables which were nice. At night the tables were $10 or higher.
A plus to staying here is that there is a tram at the Monte Carlo which goes to the Aria, CityCenter and Bellagio. It's nice to have when its 100 degrees outside. The location on the strip is pretty good as well. It's near the center and there's a CVS right next door and a Walgreens across the boulevard.