The closes airport is Kristianstad Airport (50 km by car from the site), and Malmö Airport (75 km by car from the site). For International guests Copenhagen Airport (CPH) is the most accessible airport in the area. From Copenhagen, take the train to Malmö and then onward with train towards Ystad and Simrishamn.
The closest train station is Gärsnäs if you have arrangeded for a friend to pick you up (15 minutes drive). If you plan on getting a taxi, then Simrishamn station is a bit further away (25 min drive) but probably easier to find a taxi at.