This one is especially nice for the price compared to the likes of Jurys:
http://www.themorgan.com/Location.aspxYou can find more detailed information on The Morgan here:
http://www.splendia.com/en/the-morgan-hotel-dublin.htmlParamount Hotel's own website doesn't offer great prices, but you can book them with this site and save a bundle:
http://www.paramount-hotel-dublin.com/The Arlington Hotel is a good one if you want a bit of entertainment without having to leave your hotel:
http://www.arlington.ie/irish-nights.phpBasically, I wouldn't touch the Comfort Inn with a barge pole. Jury's is fine, but overpriced for what they offer. They rely on the fact that many Irish can't be bothered to research via the internet and just book with them as a known name. Fleet Street is only average and best avoided when compared to the ones mentioned above.
Sooooooooooo, we've narrowed your list down to 2 and added 1 more...just to really confuse you.

Have a look at those 3. Check out prices for your dates. Morgan and Paramount are pretty much the same thing, so go with the one offering best price. There's plenty to do around the city at night to make up for their lack of entertainment at the hotel. If it's night time entertainment in your hotel you're looking for, as well as decent rooms/service, then go with the Arlington.
Hope that helps, but give a shout if you're still stuck and we'll have another look.