There are always new hotels opening in Pattaya, but the Dusit Thani is one of the classics. It's an older hotel but has been renovated throughout the years and kept its charm. It's also feels a lot "classier" than many hotels in Pattaya... I would feel comfortable staying here with my family.
I stayed for 2 nights in a room with a sea view. It was very spacious and comfortable with a king bed, TV, mini-bar, and balcony with a great view. Housekeeping did a great job cleaning and restocking everything each day. They even cleared the pool towels from the bathroom.
The pool is here huge with two levels and a shallow area for kids. There's also a smaller pool on the 2nd floor with a full service pool bar.
Another great service this hotel offers is the Dusit Sprinter - they'll take you right from the hotel to Bangkok in a shared car for 600 Baht.
If you book a rate without breakfast you can get pastries and coffee from the cafe in the lobby - the baked goods are really, really good for Thailand.