During the 2017 summer, I was welcomed at the LEST for a 3 month internship. I worked on the development of a tool for knowing the heat loss of different kind of buildings regarding to the forecast temperature. We were 3 French students together for the internship, and Andrej Gubina, Tomi Medved and all of the team of the LEST were very welcoming with us and helped us to feel like at home. Ljubljana is a very pleasant capital of a beautiful small country. People there are very nice and helpful. I really appreciate this abroad experience and I will probably go there another time.