Student Couple Looking for a place for September and October

Me and my girlfriend will be in Vienna for September and October for an internship and are in search of a lovely accommodation to call home during that period.
We are international master's students from Nepal, non-smokers, and a quiet and friendly couple. My girlfriend currently studies at BOKU, Vienna and I study at Copenhagen University. Since both of us will be doing our respective internships during the two months, and love to travel around, we won't be at the place often. We both are very clean and tidy and will keep the place clean as well. We both love to cook so a separate kitchen as well as bathroom would be ideal.
I am looking for something close to the city centre but anything with a short commute to the city centre works as well. We can arrange a visit as well in advance.
Thank you so much for reading!