I spent in Creagh House a couple of days during my travel around North West of Irland in the Mayo region. That should be a really suitable base for visiting region, but for getting around from there you must have a car because there are not any transport available!
Creagh House is a desolate and remote old ancient mansion surrounded by rural landscape out off all main routes. In fact, Ballinrobe (the nearest town) is 10 minutes by car only from there, and by bicycle you can explore nearby area where they are a lake and other wildlife locations to visit, or for tracking.
Accomodation provided is really frugal, so I can say just that it might be an adequate location only if you don’t have any exception about comfort or any other utilities!
The house was originally an imposing victorian-age mansion layed out right in the middle of the Mayo's rural landscape. Nowadays, however, just a little remains of original conditions! Although the interior and bed-rooms contains some old-fashioned furnishings, the total impression evokes shabbiness instead of a charming location!
Creagh House could be a really great location only when the restoration's work will have been completeted and I guess (and I hope) with more attention to hospitality!