If you are headed to Dublin you can't miss the great universities and colleges that have made so many Anglo-Saxon writers like James Joyce great. And if you are also looking for a place to sleep a few nights, try to see if the university for your period of stay they provide some rooms, magic is guaranteed.
UDC Village is open from mid-June to mid-September and in the field ofUniversity College Dublin you can rent apartments with 3 or 4 bedrooms from € 35 per person per night. Here you will also find the kitchen and the necessary linen for your vacation / study. The drawback is that they can be rented for no less than a week, the positive side is that the sea is less than 3km away.
Il Trinity College Dublin is definitely more in the center than the first but conditions change. The rooms can be rented but there are no apartments, and the price ranges from a minimum of 30 to a maximum of 60 € per night. Book well in advance as they are usually always full.