Purchase advice – VW Golf 5 BJ 2003 or Alternative

Hello community! First to me: My name is Tobias and I am 26 years old. At the moment I am a student (master). As my old Astra (BJ 97) slowly gives up the mind, it is time for another car. I decided in this case for a diesel because I will write my master thesis in Switzerland. As part of my work I will have to drive a lot there. In addition, the move is added (Bremerhaven -Switzerland). Estimated KM performance (year): ~20,000 A friend of my father would like to in its Golf 5 sale, which has the following characteristics: – Year of construction 2003 – TÜV NEW – 230.000 KM – Price: 280€ – 1.9 TDI Known defects: – Small rust spot at the tailgate Before I go to the inspection, I wanted to know from you whether the price is in principle ok. Moreover, I would like to know from you experts what else I have to pay attention to. If you come to the conclusion that the car is not acceptable, I would be interested in alternatives (up to approx. 3000€ ) Best regards Tobias