yes that's my point! Seydisfjördur looks like a cute little place. And from Egilsstaðir I don't get the same feeling... but what I know is really few and that's why I'm asking. Seydisfjördur seems more of a welcoming place to live for some months... like a small village. The other.. I don't know what to think ;D
But what is your point? If you get a (job?) offer, you have to live where they assign you, right?
If you've got a car, it is no problem to drive to Seydisfjördur even on a daily basis, it is very close by, just a steep drive down the serpentina road. As there are no hostels in Egilstadir, we always stay in Seydisfjördur hostel.
A place is welcoming if you are embracing it. I lived in several countries, most often in places that make Egilstadir look like Paris - and always had a great time. People make places, not buildings or events.