Dave, Spooky !! I was in the same hotel and the pool water was green !!!! Yes it is hot there but be prepared as the border crossings in Central America are just as hot plus VERY humid. Be prepared to lock your jacket etc to the bike so you can keep as cool as possible. I suffered on a couple of occasions and the sweat (nice) was incredible !!
For the bike import permit, ride all the way south following the coast from La Paz, you will come to the ferry terminal and if you are happy to do so (secured) park it opposite the entrance by the food stalls. Otherwise, enter, turn left through the barrier (small fee), walk towards the buildings and the Banjercito is on the far right. The young lady there spoke excellent English and it did not take long. Try to do this at least a day before you sail. They take a hefty deposit (under $400) and you do get it back when you leave Mexico. read my blog about leaving Mexico as the Banjercito is MILES away from the border.
Great report and safe riding.
ps. I AM looking in my mirrors !!!!