Radostín is a municipality and village in Žďár nad Sázavou District in the Vysočina Region of the Czech Republic. It has about 200 inhabitants…Radostín is a municipality and village in Žďár nad Sázavou District in the Vysočina Region of the Czech Republic. It has about 200 inhabitants. Radostín lies approximately 11 kilometres north-west of Žďár nad Sázavou, 34 km north-east of Jihlava, and 115 km south-east of Prague. The Doubrava River originates in the municipal territory.