Friendly visitor needed for a 77-year-old neighbor in Lagos

I'm writing for my neighbor Isaac, who's 77. Isaac lives alone in Lagos, and lost a sister last year. The nearest family lives several hours away. Isaac loves crossword puzzles, and would enjoy someone to chat with. An hour a week, perhaps on Friday afternoon, would mean the world. We can also arrange a phone call if you can't visit in person. All visitors will be introduced by me and I'll be there at the first meeting. I'll share references and, if you'd like, a short orientation from the local befriending charity. No special skills are needed - just kindness and patience. Even a small gift gets used right away and I'll thank you myself.