Please, correct my mistakes and grammer- this is a part of my motivation letter.-

Firstly when I was in elementary school, had opportunity to go to Germany to visit my family friends and some of my family members live in germany. By the reason of my realtions know germany I gradually start becoming interested in germany language and got more detailed information about master education in Germany the result of my studies and language education at Goethe Institut.
I am impressed by your University is being one of the most oldest universities in Europe , having much valued faculty staff and strong infrastructure and locating in such a beautiful place and the most imported thing is presenting a international educational platform for their students as having %15 international students.