Tao is the way to go if you are staying at the Venetian. I went on a girls trip to Vegas and was able to get into Tao for free and with VIP every night. Right to the front of the line, and walked right into a bar with free drinks from 10-11. A lot of places offer these types of deals for women, and it's a deal that can't be beat. Tipping $2 a drink for a well mixed is an amazing deal.
The club is top notch and huge. It does fill up fast and get kind of crazy on the weekends. There are bouncers EVERYWHERE so it's nice to know that even though you're in a club, it's a pretty safe environment. One night I took off my shoes because my feet hurt (I know this is a no-no) and the bouncers were on me like white on rice within 15 seconds! The bathrooms are also pretty cool. The glass on the door is clear, but then fogs up once you go in.
If you go on a Friday or Saturday you will get to see women hanging from the ceiling doing acrobatic types of stuff and they also will dump glow sticks onto the dance floor which is fun! Probably the biggest negative was the DJ. The music could have been waaay tighter. I'd say one out of every 3 songs played were danceworthy. For Vegas I would have expected way better beats. Overall though it's a pretty cool club and worth going to at least one night if staying at the Venetian. I would also recommend going in the summer if possible because the party goes up to the roof level where Tao beach is, and the cabanas are pretty sweet!