ray - I have couple of friends who have enjoyed traveling to Tokyo by themselves. But they are people who speak some Japanese. Traveling alone wouldn't work IMO for most people who don't speak any Japanese.

So my first goal would be to "revive" the OP's travel companion.

And the second would be to come up with some additional travel ideas.

Even though I like Tokyo - I think 2 weeks there on a trip is too much. No one has mentioned Kyoto (worthwhile destination IMO - although still very hot in August). BTW to OP - will you lose any money if you cancel your stay in your current hotel room say about 24 hours in advance? Robyn