Make up the maths on the apartment on it's own. Take rent minus two months as a starting figure, deduct all payments like management fees, insurance etc. Then deduct the tax payable. When you have this figure it's easier to join the dots. So say at the moment, it costs 2k per annum to hold on to it and you are paying 5k off the principle then the gain is 3k. Given these rough figures work off that and see whether it's worth hanging on to. My bet is that it is worth the punt.