Visa

Iranian visa is not that hard to get as you may suppose. At least as long as you're not in an "enemy" country. But  even if, it's still possible to get it.

Before you go to embassy or send them any documents, I advice to apply for a visa in KEY2PERSIA. It's a travel agency that helped me to get the visa- by giving me a verification code. It costs 30 Euro and is worth it, trust me.
There are also other agencies, but I can't say whether they are good or not. I recommend key2persia, even if sometimes it took them some time to reply my emails. Ms Zahra, whom I contacted was really nice and helpful , and I got my code after 3 days (which is fast, since I was informed it might take up to 10 days). Don't forget to add the scan of your passport to the application.

Onca you have a verification code, you can bring/send your documents to the embassy. The visa costs 50 dollars, at least in my country. Attach two passport photo and a copy of your travel insurance.

I received my visa after 5 days, but be prepared that it might take longer.

Good luck :)