I need to scape, massage, beach all this stuff but I dont want to go far away. It is better from Berlin to go there by plane or by train?
I am happy with 25 degrees without wind. I dont need 30.
Your best option would be to fly into either Split, Zadar, Dubrovnik, Pula or Rijeka. If you need more info just ask, I would also advise checking out this great data base of questions per location here croatiatraveltips.com
The more southern you go is better if you want warmer weather so Split or Dubrovnik even better.