I loved staying at Abigail's Hostel in Dublin. Out of all the hostel's I stayed in in Europe this one was the best! The hostel is located right on the Liffey River on Aston Quay. It is a block from O'Connell St and right near Temple Bar. You don't need a bus pass if you stay here everything is so conveniently located.
Abigail's staff is top notch. They were very friendly and helpful. I arrived hours before my friends and they gave me directions and ideas of places to eat, where to go, and things to see. I stayed in the 12 mixed room which was extremely spacious with 2 bathrooms and showers in the room. Also there are plenty of plugs for each bed, free WIFI which amazingly worked great and breakfast is included. Compared to other hostels they had a feast: toast, jams, eggs, yogurt, cereals, coffee, tea, and juice. Also, the kitchen is open and they have sinks and microwaves for use. The common area is large and comfy. I took a nap on those sofas :)More