We like Aruba! We have never felt unsafe while walking about, or while getting lost on our bikes, or in the rental car. However, we have found that Aruba is the place that tries to kill your bicycle tires. Between our boat neighbors and us, we have used up multiple patch kits, tubes, and even have resorted to replacing tires. The thorns here are nasty. Do not stray from the pavement for ANY reason. Once imbedded in your tire, the thorns will annihilate your tubes. You think you have them all pulled out, but nope. One will be forgotten or broken off. Mark had 11 punctures in one tire on one trip. Angie has ended up walking home, not feeling like patching the tire along the side of the road. We have found the bike shop located in the back of the unmarked Radio Shack in Oranjestad has cheap ($3.50) tubes and patch kits.
Being at the marina means we are in a relatively protected area. The wind does not flow like out at anchor. It can get stifling sometimes and Angie refuses to turn on the air conditioning, trying to acclimate. It seems to get worse with every trip. However, 85% humidity and 95 degree days (outside as well as inside the boat due to no insulation) can be a bit much.
We usually end up trying to find A/C in the early afternoon at a shop or at Starbucks while doing computer work and using their wifi. Or, we end up taking multiple showers a day, to try to get the body temperature down. The heat and humidity makes it so you really do not want to do much.