Kindly Assist with Information

Hi guys? Kindly assist. I have an interview to attend in Nairobi, and I stay in Kisumu. I plan to travel to Nairobi the night before the interview but I'm on a tight budget and I can't stay with relatives.

Where can I get myself cleaned up and ready for the interview by 8am?

Two, can someone recommend where I can keep my bag with my change of clothes for a few hours for the interview?