Simplify the following text for a Grade 3 native English-speaking person.
Original: Gotland is located about 90 km east of the Swedish mainland and about 130 km from the Baltic States , Latvia being the nearest . The island Gotland is obviously just one island , but the historical province of Gotland also includes adjacent islands , which are often considered part of the Gotlandic culture :
Simplified: Gotland is an island on the east coast of Sweden .