One of my friends tenancy ends this week during his final university exams, so he hasn't got a flat to go to and his only other option is to move back home with his parents (about 45 mins outside the city). He's told me and DP that he's not getting on with them and really wants to avoid it if he can. He then asked if he could stay with us for 10 days...
AIBU to say no, despite his sob story, due to the fact me and DP live in a tiny 1 bed flat, barely big enough for two. My mental health hasn't been fantastic and I really need to have space to relax after work away from people. And my job itself has been quite stressful recently so I really don't want to come home and be "working" at entertaining someone - especially in their stress with final year exams.
I feel like I can't really refuse him but I know the next 10 days will be miserable if I say yes. If I can how can I refuse politely? I feel like such a horrible person!