Without knowing your personal circumstances - income, existing mortgage/loan repayments, if you are currently renting etc., it is diffiicult to say how you could qualify for a higher mortgage. A €240k mortgage over 30 years would cost approx. €1270 pm, rising to €1580 if interest rates increased by 2%, which is a little more than you are currently saving. Would you be comfortable committing to more than this by taking out a higher mortgage?
If so, would you qualify for a longer term that 30 years? Would you be in a position to rent a room? Do you have any existing loans that you could repay from your savings? These will all help to boost the amount you can borrow.