Is there a mitzvah of welcoming guests who are non-Jews?
I know Avraham welcomed non-Jews into his home, but that could be different for several reasons: There was no formal mitzvah and he was just doing general acts of kindness; there were no halachos at that time specifically instituted for the express purpose of limiting interaction between Jews and non-Jews; there were no Jews to welcome, so perhaps this was a back-up option.
Therefore, if you want to answer based on Avraham's practice you need to explain how it is a justifiable comparison.
Please source your answers.