We enjoyed Ger's houseboat. It's nice and have all you need - 2 bedrooms, kitchen, living room, bathroom, and a little stove ... everything in a scale that match a houseboat. And Ger is a very good host. He always answers very quickly and is taking care during your stay.
Just be aware - if you are going to use the train back and forth to Dublin, then check the timetable. There can be more than a hour between the trains.