You can leave both types of contracts at any time.
However, with a fixed 1/2/3 year contract, it means exactly that, you pay EVERY MONTH FOR THE WHOLE PERIOD, whether you still live there or not. It means you could sign a 3 year contract, change your mind and never move, you still have to pay for 3 years. I would advise against this sort of contract. There is NO NOTICE PERIOD on a fixed contract, unless you can actually get a landlord to include one which is very very rare. You move out with notice or without, you still are obliged to pay the rent for the whole period of the contract (unless you can persuade the landlord to put a notice period / diplomatic clause which defeats the object of giving you a fixed contract). If you can get a landlord to give you a 6 month contract, then you're lucky, but expect to pay more for the privilege too. These contracts are often offered to expats because landlords know they are in a win win situation with these contracts and the tenants often lose big time on them.
A 9 year contract is the one most people have. You cannot be easily evicted, unlike with a fixed contract. You must give 3 full calendar months notice counting the 3 months from 1st of month, best to sign for 1st of month as if you sign for 31st month, then notice period is 3 months and 31 days.
The penalties for leaving a 9 year contract are in the first 3 years only. Years 1/2/3 penalties are 3/2/1 months rent.
You normally give a deposit which can never be more than 2 months rent.The deposit is either put in cash into a bank account and you need the signature of the landlord to withdraw it when you leave (account is at least interest bearing and you keep the interest), or you can pay a fee to a bank to supply the "guarantee". Don't be surprised that you lose a great part of this deposit when you leave - you will either have to agree to an informal exit inspection and agree on a price for any damages, or you share the cost of an "expert" who will assess any damaged for you, cost of this is shared. An entry inspection is obligatory and cost is shared between tenant and landlord. Try to mutually agree the "expert" for this entry inspection and ask for the qualifications of the "expert". You might find a landlord waiving the obligatory entry inspection, hard to know the consequences.
I would go and see Mol and Antwerp and anywhere in between. I am assuming this is European School Mol which is several kms from the train stations of Mol and Geel, so check out the public transport there and the time taken from somewhere like Antwerp, before considering where to live. If it really is European school Mol, then there is only one bus to school in the mornings and one in the afternoons in to Mol.
http://appl.delijn.be/dienstregelingen/ … 120501.pdfhttp://www.delijn.be/images/Netplan_Lim … -29589.pdf
The train between Antwerpen Central and Mol is 52-56 minutes and it's trains every half hour. There is also Antwerpen Berchem station which is a little furth south of the centre, should still be in 2000 post code, time to Mol is 50 minutes from there and again trains every half hour to Mol.