Maximum Loan to Value (LTV) rates nowadays are about 92% max, more usually around 80% . This is the percentage of the house value the bank will loan you, the rest you need to find yourself.
These means on a house valued at €155,000 with an 80% LTV you will need to raise €31,000. Beyond your means.
If you can find a lender willing to offer 92% for such a low wage, you'll only have to raise €12,400 which is easily within your means.
With the recent credit crunch and capital drying up in the banking system, You will have to work damn hard to convince any lender that you are low risk. Having a spotless credit history and consistent employment record, including being in full time permanent employment helps. Being on probation or just into a job won't do you any favours.
A lot of banks are quoting quite ridicilous interest rates when you apply, 7%+ (tracker mortgages are now a thing of the past!), in an effort to minimise new business, as it's better for the share holders to do this rather than just say 'we are not looking for new business', so don't expect them to greet you with open arms!!
With prices going down so rapid in some areas, I have had experience of people being asked to get the property revalued up to 4 times in the few months it took to get the mortgage organised, and some of them had LTV's as low as 50% in the first place.
You may also want to check out the 'Rent a room scheme' as some mortgage providers will make sizable allowances for people on this. With no kids and single this would be a wise option.