Dublin is a small city and it has a large number of hostels and budget hotels to choose from that you can search and book online. If you choose to stay in a hostel or hotel when you arrive while you search for rented accommodation, you should budget to stay in for a minimum of two weeks or up to four weeks. Some hostels and hotels have cheaper rates for longer stays so you can shop around for better deals.
hostelworld.com has a lot of hostels and budget hotels in Dublin city.
The following is a list of budget accommodation within walking distance of NCI.
Some Hostels in Dublin 1 and 2 within walking distance of NCI: