Yes, there was one temperature for the water - somewhere between 80 and 90 degrees. All the water pipes were above ground. Once I got used to it (remembering to keep the bottle in the fridge filled for drinking,) I liked it. It was fine for bathing, washing clothes, cleaning, etc. I don't remember ever seeing a dishwasher in a private home which I admit I did miss, but unless there was sticky stuff like dried egg yolks on plates and pans, I never boiled water, just soaked.
Living on Aruba was like "eternal summer" and I missed the change of seasons after awhile. The cost of living was high in some ways (everything imported) but my husband made a good living so I never really thought much about it. Since I was a newly wed, it was like a really extended honeymoon!