The thing is, I live in a small apartment on the fourth floor, and I'm uneasy with locking a cat in for life. I do have a balcony, but that's not much of a play area.
I've always considered myself unsentimental about animals, but I do feel cats should be allowed a certain freedom.
I'd like to hear from people with cat-experience. There were cats in the home when I was little, but that was on the ground floor and keeping them healthy and behaved wasn't my job.
If it makes a difference, my apartment is (if I understand feet correctly) about 460 square feet.
It's more sentimental to realize cats belong indoors. "Locked in" is much better than having to worry about predators, cars, disease, mean people, etc. Cats that haven't lived outside don't know living outside is an option, and many cats that have that I've known, soon realize inside is much better than out and make no effort to be outside again. Cats are small and sleep like 16 hours a day. They're not sitting around going, 'wish I could get out to the movies.'
They DO however, need stuff to do - toys, scratchers, and someone to actively play with them. They also shouldn't be out on balconies unless the balconies are very well secured. If they can't see what's on top of the wall, they may jump up to see, or stick their heads out slats to see, and fall. Having spots of various levels inside to climb and sit on is ideal.
I guarantee there are animal shelters and animal rescue groups in Iceland by you. I know it's a small country, but I also know that there are cats there that need adoption. Adopt - and I'm very much with Tess that an adult would be better for you. You'll be able to talk to someone about the cat's personality, and you can find one who needs a home but not constant interaction or supervision. Siblings are good but don't expect two random cats to get along. Cats are not dogs. Dogs are pack animals, cats are not. Cats do fine alone.
I'm not questioning Tess' experience, but the person I know who had a Siamese had a loud, bitchy cat, heh. She was not a lovey dovey animal. Which is fine - all animals, including humans, have their own personalities. Just saying, because I read that and thought it was funny, as my limited experience with Siamese was so the opposite. Hence adopting an adult is a much better idea.
Though I would really consider if you really want an animal. This is a years- to decades-long commitment. You must provide good food, activities, love, care, vet visits, etc. It's not like getting a piece of art you can just ignore if you're bored of it or busy or toss out if you don't feel like it anymore. It's a serious responsibility; it's a life that will depend on you for everything.