Self-inflicted accident ADAC partner workshop yes or no

Hello, yesterday I had a self-inflicted accident (foreground disregarded). The vehicle is a Ford Mondeo 2005er with damage in the area on the right. Due to my insurance (DA direct) I was offered to have my vehicle repaired by a partner workshop. Advantages would be: -Hol and Bring Service -3 year warranty -Cleaning inside and outside The workshop as link:http://www.autodienst-schmudlach.de/ Important to me is an absolutely professional execution What do you think, let do, or prefer to choose your own workshop. If so, what should I consider?Invoice etc. in order to document damage for me, for the purpose of possible later sale, etc. I am grateful for your answers or experiences.