
I went to Dublin a few years ago & I cannot for the life of me remember the name of the hotel we stayed in, I want to say the Red Lion but a quick google hasn't brought anything up. It was about 5 mins walk to St Stephens Green, very well priced, lovely rooms & great breakfasts. There's an abundance of hotels & B&B's in Dublin, it all depends on where you want to stay. Temple Bar is bound to be quite noisey with all the pubs, although might be a good location for your kids. However I don't remember Dublin being particularly cheap & with the £ so weak against the Euro it might cost even more at the moment.
Other city breaks I can recommend are:
1. Edinburgh - just got back from a (messy) hen night here, great city, tons to see & do, relatively cheap to stay also.
2. Barcelona - beautiful city, some really cheap hotels if you don't stay near the centre & with a great metro system it's no hassle to get into the centre. So many things to do, I'd so just to walk up & down the Rambles again.
3. Paris - not cheap to stay or eat but breathtaking, probably need more than 2 days to see it all, I've been 3 times now & still haven't seen everything I want to.
4. Amsterdam - many low cost airlines fly here & some very very cheap accomodation can be found if you're not picky.
5. Munich - bit further a field but a lovely city steeped in history & relatively cheap to eat our & drink. We stayed with friends so not sure what accomodation will be like.
Hope that helps, let us know where you end up going! In fairness there's some lovely cities here in blightly if you don't want to trabel far.