As your only staying midweek Tue-Thurs it won't be that busy in the City so I would recommend you stay as central as possible.
To give you a feel for the geography of the City O'Connell Bridge is In the Centre and the heart of the City.
The 3 Hotels you are looking at are Jury's (Northside of the City and about a 10 minute walk to the centre).This area is heavy with shops and offices so can be a little deserted at night.
The Quality (East of the City and about 15 Min walk, the area is being regenerated so lots of construction work going on, but by all acounts a fine hotel, breakfast costs an extra 13 euro though and you would get your DINNER in any of the cities pubs for that price!)
The Camden(Southside of the City, about 25 min walk if your feeling energetic!) they are all close to the outer limits of the city in terms of tourist interests. As you can tell from my walking times guide the tourist areas tend to extend out further on the Southside.
I can suggest a few more central hotels to you, namely Temple bar Hotel. I've stayed here and you will only need 2 Taxis for your stay!( To and from the airport (about 25 Euro each way) and visiting the Guinness store house(Don't miss this, Try and go on your first day and you will get a real feel for the city!) Jury's have another hotel called Jurys Christchurch which is pretty good as well although not quite as central as the Temple Bar hotel.
Good places to visit for live Irish music include The Arlington Hotel(Another Hotel with a super location but I can't recommend it as I havn't stayed, sorry!) and a pub on Westmoreland street 30 yards from Temple Bar Hotel called I think..The Bridge cafe bar or it might be the pub beside it, just follow the sound of live music!
There is a great Italian Restaurant in Temple Bar called Botticellis if you like that kind of thing(I do) but if you want to try Irish food the Oliver St. John Gogarty is the place to go, especially if you like sea food.
For shopping There is the Jervis centre(Northside 5 mins), Grafton street and Stephen's Green shopping centre(both Southside).
Here are a few sites that you might find useful, Including the official visitor site which has maps and stuff.
Hope this helps, enjoy your stay.