Yeah, Dublin architecture is by and large drab and grey. The Georgian stuff is nice and the newer stuff around the Liffey provides some welcome relief, but by and large Willempie is right.
Dublin is a very liveable city, in my opinion. Scale is reasonable, people are friendly, culture is vibrant, sea / mountains (loosely defined) / countryside very close by etc. It probably won't keep you entertained forever, but for a few years posting, one could do a lot worse...
Re healthcare, I'm sure Scandi public systems are not exactly the Mayo Clinic - overworked and underpaid seems to be a universal phenomenon (OK, maybe Norwegian system is like the Mayo Clinic

). At one stage, there were many Finnish nurses coming to Ireland due to the pay disparity. Still, I know where I'd rather get ill...
The Irish system has certain unique elements that make it particularly useless:
First, you had a system of 11 Regional Health Boards administering public health, which is lunacy in such a small country. Lots of duplication, patronage, gombeen politics, etc. Then the Health Service Executive was introduced to replace these, but in practice, it just added another layer of bureaucracy, so you have large sums of money being poured into the system, but much of it is squandered on bureaucracy and wasteful duplication.
Even at the height of the Celtic Tiger, the health system still felt like something out of the Third World. Galbraith's private opulence vs public squalor never seemed more apt.