Simplify the following text for a Grade 7 native English-speaking person.
Original: Pattaya is a city in Thailand , located on the east coast of the Gulf of Thailand , about 165 km southeast of Bangkok located within but not part of Amphoe Bang Lamung ( Banglamung ) in the province of Chonburi .
Simplified: Pattaya is a city in Thailand , located on the east coast of the Gulf of Thailand , about 165 km southeast of Bangkok .