Josie at Ferndale House in Enniskerry (home of Powerscourt Gardens) is offering a discount to my readers of 5 euro per person for those that stay 3 nights or more.
Ferndale is a historic house located right in the village so you can walk everywhere. It is filled with antiques, was a film location for a TV movie and has a surprisingly large garden to enjoy out back. Private off-street parking is a plus.