The 3 Bears was a very peaceful holiday base and is in deep countryside but it is easy to get to Navan and Slane ( which is closer ) and has a castle and rampart walk along the river Boyne.
The cottage is located in an historic part of Ireland.
Local must sees are the Hill of Tarra which offers walking and a pleasant cafe.
Beaches are at Bettystown where there is plenty of space. ( it may be difficult to find parking at exceptionally busy times so go early or late in the day if it’s hot ).
Good links Dublin and Belfast