Being chilly in the room, breakfast (maybe my tastes are different than others though - not the host's fault), internet going down at 1 AM, dimness in the room.
My husband and I booked the last room which was the "family room", bigger than we needed with 3 beds all close to each other, a queen and 2 singles. The room could use more chairs in family room as there was only one. The light was dim at night. There was a picture window in the daytime which provided good light. The room was cold with no visible way to adjust heating or cooling. We would have enjoyed heat but we did not bring this to the owners attention as it was late when we got in. Bed was warm and comfortable with good blankets. Room was very clean. Plenty of hot water for showers. Internet strength was adequate most of the time but service went down at 1 am when we were trying to check in for our flight online the next day. Not sure why, so we gave up and checked in the next morning when Internet was back up. Breakfast was ok. We wanted fresh fruit and cereal which they had. I think we just missed our own homemade breakfasts with specific fresh fruit selections. They provided overripe banana, pears, kiwis, apples and oranges and 3 different types of cereals. John picked us up and took us back to the airport for a fee of 10 euros. He had us call him from the information desk when we arrived at the airport. He also took us to the most convenient bus stop so that we could get into Dublin in the short time we had. He lent us change for the bus as all we had were bills. This was extremely helpful as without his help we may not have been able to explore Dublin in such a short time. He came and picked us up after 10pm at a local pub where the bus dropped us off. John is friendly and quite talkative. He was very kind to provide this extra shuttle service (for a fee) which made out trip into Dublin city possible and made our airport connections work. We should have allowed more time for international departure at the Dublin airport - it was a much more lengthy process than most.