Catalyzes the hydration of cyclohexa-1,5-diene-1-carboxyl-CoA. cyclohexa-1,5-diene-1-carbonyl-CoA + H2O = 6-hydroxycyclohex-1-ene-1-carbonyl-CoA Aromatic compound metabolism; benzoyl-CoA degradation. Belongs to the enoyl-CoA hydratase/isomerase family.