Do yourself a favor and book with Frank! I was visiting Dublin for the first time and Frank's place went beyond my expectations! I visited during a rugby match and the hotels were quite booked. One of the best perks is his place is central to pretty much anything you need to get to. There is a place to grab late night food after a night of fun, some grocery stores if you want to save some money and pack a lunch for your day. I got my own private room and own bathroom and it was fully stocked with everything that i needed.
Dublin is a fantastic city and I would be delighted to stay with Frank again!