Buying an apartment in Barcelona

Can anyone provide some advice on buying an apartment in Barcelona?

  • area: looking in Eixample
  • websites for property (the daft or myhome equivalent for Barcelona) - I’ve found this one: idealista.com/en/
  • reputable estate agents
  • mortgage: can I get a mortgage in Ireland, or does it have to be in Spain?
  • solicitors
  • taxes

Thanks!