Remember that lving and working in a bar in Spain is not all fun. You cant just shut up shop and go to the beach.
You need to be open long hours, and deal with all sorts of people. And you will be doing the same thing for 5 years, 10 years etc.
The number of people who buy a bar in Spain but return home within 2 years is very high (30% or more).
Search the interent and see how many bars there are for sale. I think many agents in Spain are happy to take the commission for selling a bar, knowing they are going to sell it again in 6 months.
Read this here for some people's views
http://www.barsinspain.com/page091.html