Short term rental (July - September/October)

Hi everyone !
First of all, nice to meet you. My name is Axel, I am 26 years old and I have lived in Berlin since February last year.
I was born in Argentina, so my native language is Spanish, I speak English and I would like to learn Deutsch.
I work at Gorillas as a fulltime rider as I love sports and being outdoors.
I am a sociable, clean and tidy person. I don't usually stay much at home because when I'm not working, I tend to be in a park alone or with friends. Non smoker, but any problem with it.
I am currently studying/practicing music as a hobby. In all the places I lived I never had a problem so I hope this stays that way.
Looking for a flat or shared room in a flat at least till end September but could be more.