A
transfer should go within a matter of minutes but maybe your bank is hanging on to it longer for interest reasons
If people do worry about the money they are sending to apartment owners or managers (which I am seeing lots of reports of lately) then ask the managers to maybe set up a secure 3d payment system like
ICR Travels or even an online secure booking system like ICR Travels
I will say also that who is to say that the person you made the deal with in 2011 is actually still working at the place or even own the place that people are parting their hard earned money to.
I did see a 2 bedroom apartment advertised on another forum last week with details of how to pay to the Turkish owner, who btw is not the owner but was managing the place and his name and bank details are still on the site after being sacked.
Be carefull who you pay