We had a vey nice stay in this fine apartment. Carolina was flexible with the time for ckecking in (which probably can depend on if she have guests leaving the same day). She also answered the questions we had before arrival quickly and nice.
The apartment is, as many other already have written, very good and offcourse the balcony is the highlight. The location is perfect for exploring San Sebastian. I can recomend Carolinas apartment to anyone who is looking for a two bedroom aprtment in San Sebastian.