Try [broken link removed] for a list of kennels.
I've also used City West City Kennels (01 4583602). I've no idea whether they're good or not but our mutt was given back to us in one piece, albeit a bit freaked out for a couple of days (more to do with separation from his 'pack' than the kennels I suspect).
One word of warning though, book well ahead, espeacially for Christmas or other holiday periods (I suspect its too late to book most kennels for Christmas at this stage).