I stayed at the Venetian the last time I went on a Vegas trip with the family. There are five of us in the family and the Venetian was a perfect hotel to accommodate us. When we arrived in Vegas, our room wasn't ready. It was super busy that weekend because of Independence Day. The room we had had two beds, 1 L shaped pull out sofa bed, 2 HDTVs, walk-in closet and a bathroom with a bath/shower. The bathroom even had a TV in there. Sweet! Don't knock over the water or candies sitting on your dresser as they are magnetized and will charge you a lot of money for things you can pick up downstairs cheaper.
The rooms are far enough away from the casino and in order to get into the room area, you have to flash your room card key. There are different choke points of where you can enter to get to your room. Elevators are the only way to you room and there are enough of them so you don't have to wait. Watch out for the drunk people stumbling in. I was in the elevator and this guy had to be held up by his friends because he was that hammered.
The casinos are nice and so is the pool. You can eat at the Grand Lux Cafe or you can go see the Blue Man Group. Make sure you get their players card to get points on whatever. I enjoyed their sports booking area, with large HDTVs and up to date sports scores. The first night I placed my bet on Brock Lesnar to win and won money that night!
The prices vary and you can get a good deal if you go on off days and not weekends.
Free parking in their parking garage. Just remember where you park. We made the mistake of forgetting and took us 30 min to find our car to go home.