Looking for advice on how to prepare for post skype interview university visit

[Laura Garnham]

Dear lovely people who I hope can help me. 
I had a Skype interview for a paid PhD placement in Sweden a few weeks back and have recently been invited to come and meet the supervisor and see the department/ university/ city in person. I know that other people have been invited to do likewise so this seems like the next stage of the interview process. I will be there for over 2 days, which is quite a long time, I think, and staying with the Supervisor. I would be hugely grateful if any one can give please me advice on how to prepare for this, or some information on what I should expect, I have never done anything like this before, so any advice will be useful. Thank you so much for your help, it is very appreciated. All the best with your PhD hunt/ your PhDs. 
Laura