@Hannes **********
From what I understand you just don't have enough money to live off. Better keep your appartment for the moment and save money first and make a decent plan.
Selling your apoartment in Belgium => seems like you need the money, which means you don't have enough.
You use the words " if I sell my place I have a little bit of income to survive". So then after everything is gone, then what ?
Just stay in Belgium for the time and go on holiday during the winter months.