I'll have to take you up on a visit to your bar. I'm hoping to head south and visit the Gambia in the near future!
I have spent several weeks in Bissau and am down there every quarter or so. I love the town and would suggest checking it out. The hotel Azalai is nice a
(actually an old officer's barracks made into a great hotel) and the bike would be safe. The hotel Coimbra is very nice and downtown right next to the port and the restaurants......but it would be street parking for your moto.