Language immersion

dear all,

i really need help now,,

i am goin to take the summer program, like a short course for the summer, to learn spanish..

so i got 2 offers,

one is to stay for few months in granada,, i have a good friend of mine from granada,, they said its a very nice town, and people are so friendly, also a student city..

2nd is to stay in vitoria. i also have a friend, he used to be my spanish mentor here in jakarta. he would let me stay with his parents as they dont speak english at all..so that way i could immerse with the language and culture as well..plus vitoria is also very beautiful..

ok so i am now pretty confuse as i never been in spain before.
so my questions would be,,

which you think better?
if i wanna learn the language also to immerse with the culture,,
should i stay longer in vitoria or granada?

i am concerned as well about the accent,, which is easier to understand, and it might effect me as well, as i will learn first from them,, i might end up having the same accent as they have,,

so i really really need opinion,, plus,, if you guys have any other alternatives of where i should learn it..

i am looking forward to receiving any answers here..

thanks alot!