Well, the location. it's good only if you're coming from the Shannon airport. Otherwise - it's not. there are barely any bus lines connecting Sixmilebridge with Limerick or other nearby cities, so you have to use train. However, the location is OK if you want to visit the Cliffs of Moher.
Secondly, hostel itself. Rooms were OK, actually we had one extra bed and bathroom so we didn't mind some fairs on our pillows... The owner and his wife were really nice, helping us with our daily trip to the cliffs, and offering us some local information. And dogs are so cute :D