congrats on getting onto the PhD programme. I don't have much advice with regards to the university but I have been to Reykjavik a couple of times and it is one of my all time favourite cities. I'm v envious! It is very small considering it's the capital but it is full of character and really beautiful, as is the whole country which I'm sure you'll explore once your there. I don't know what to say about the culture other than there's a lot of interesting history and the Icelanders like to party and can drink most people under the table! Sorry, not much help but I'm sure you will have a wonderful time there.