Seller financed - what is a good deal?

[Tuva Jorfald]

Since I am from Norway, and dont get loans too easily for investing overseas, seller financed might be a good option for me. I found a few objects but what should I ask for when it comes to terms? Any rules of thumb? I think I might go for a rent to own sollution with a small down payment.. Is that smart? The rent of course have to be low enough for me to still profit from short term rental. Thank you for any input :)