Hotel is plush and tastefully decorated. Fantastic restaurants and museum (Picasso on when I went). You can even see daylight at places. The shopping is high order if that is your thing. After walking through the majority of hotels in the strip you will soon agree the Bellagio is one of the best in Vegas. No issues with food, staff or the gambling.
The pools are great but note there are no water slides in case your after Disney style swimming. The pools are for relaxing.
The fountains at front of the hotel are lovely at night.
Oh and a great location.