1. the six years is long. i am partly through year 5 now, and i would be lying if i said it wasn't tough. but, summers are long and free if you work hard, and it is a good pace. if you focus and stay involved in school, it is a great program. if you get distracted and party too much, you get behind so fast it will make your head spin. be careful.
2. i am not sure where the exams are held now. that has recently changed.
3. during first term i would live in the school dorms, in order to meet people. soon after that i would get an apartment in the center of town with a good freind or two. i had a great place with a great roomate for the second and third year and it made a huge difference. during the clinical years, i spend more time in the states, so i go back to the dorms to save money and so i don't have to pay rent for the several months a year that i am in the states.
4. i think it is important to realize, that no matter where you go to school, it will be tough. do not expect any school to spoon feed you, or to be like the US schools. the only schools worth going to are the schools with universal approval in the states (ross, auc, st. georges, ireland, isreal, australia, charles, dote and sgzed in hungary, i believe are the ones to consider) there are too many good schools that will not limit you, it is foolish to go to one that does.
hope that helps