It's not really appropriate on this type of forum to promote one manufacturer over another unless there's solid reasons (e.g. major problem unrectified/ignored by manufacturer) for doing so.
You can get a quick run-down on available makes and models in Ireland via Google.
And get the low-down on features and issues with them on forums like askaboutmoney.com.http://www.askaboutmoney.com/search.php ... d=21148842
Can you quantify or classify (e.g. the insulation standard grade, A, B, C etc) the insulation standard ?
Saying a house is average insulation is saying that it's pretty low . . .
Stoves do provide good heating for kitchens and living rooms and are easy to fire up in the morning if you keep some basic level of cinder going in them overnight.
There's a good range of sizes to match the scale of the space being heated.
And they're versatile enough as regards fuels used, coal, turf, wood, recycled paper bricks, etc.
Another thing you might consider is the "fireplace insert" type of stove.
These are made to fit into standard sizes of fireplace and heat radiantly through the glass window of the front door of the insert, as well as via conduction + convection. I've seen these work very well in new house -- granted better insulated than your old terraced house. And you have no draught or dust with the indert door closed.
But frankly, since insulation is the first thing to do for a house like this, I'd say that a stove might not be your only option -- since the heat demands of the well-insulated house are not too high.
It might be an idea to look into these options too : geothermal, solar, wind-generated electric power.