I've been looking to buy my Renfe ticket from San Sebastian to Barcelona.
I don't have the actual address of the apartment, but I know it's in Barceloneta.
Renfe pull down menu gives several Stations in Barcelona starting with Barcelona(*), then at least 4 more options.

I lost the chance of buying tickets estrella price today because I had no idea where to get the tickets.

Does anybody know?

Thanks,
Mia

Barcelona(*) means "any station in Barcelona"

Estacio Franca is the closest. You can walk to Barceloneta from there in 15 minutes.

Not every train stops at every station. The Star is very much like putting in "NYC" airports into something like Expedia, they will show you the combinations. Your combination may or may not work.

The trains from San Sebastian end at Barcelona Sants. From Sants, you can take a regional train to Estacio de Franca (about 20 min) which is right at the corner of Barceloneta. The walk to your apartment might take just a few minutes.

The estrella (*) ticket is valid for all stations in Barcelona, including Franca.