No. Don't do it.
What seemed like a good idea a few years ago, my SIL needed to leave Australia in order to get a visa so she could apply for permanent residence.
She asked if she could stay with me for six months.
Seemed like a good idea, but the reality is that you have to take into consideration their tv viewing preferences, meals have to be accommodated, leisure activities etc.
Whilst she was very pleasant, I found her hard work as she seemed to find everything funny and continually laughed at everything. In the end I felt it a great strain and couldn't wait for her to leave. There will always be a clash of personalities. Take everything into consideration.