Mersea Island Holiday Park sits on Fen Lane in East Mersea, Colchester, Essex, positioned close to the beach on the Essex coast.

Operated by Away Resorts, the park offers both static caravan accommodation and seasonal tent camping, with camping available only during selected days in the school summer holidays.

The site does not accept tourers, campervans, awnings, or caravans onto its camping area — tent camping only. The park provides access to a shower block, wash-up area, and laundrette, and campers receive guest passes granting use of park facilities.

Its setting is described as peaceful, with direct beach access and countryside surroundings on Mersea Island, reached by crossing the Blackwater Estuary.