Cead Mile Failte go mBaile Atha Cliath :D
I'll put the rest in English or you will be looking like this>>
http://www.bewleyshotels.com/ballsbridge_hotel_dublin.asp
I recommend Bewleys Hotel in Ballsbridge. €99 per night. Really comfortable, 5 mins walk from city centre, secure underground carpark,
Also
http://www.jurysdoyle.com/ have a look at the Jurys Inn @ Christchurch (very central)
BARS
http://www.worldsbestbars.com/city/dublin/index.htm
FOOD
http://www.visitdublin.com/restaurants/restaurants.asp
Enjoy your stay!