The image I have created in my head.Man lives (as expat I assume )in a condo building. Sounds nice. Condo boards has many rules and regulations. That's good for keeping up the value. Hot water at prime times is scarce because of demand. Not an unusual circumstance. Image is clear. Now it gets cloudy. Recommendations : set up a blue barrel on your balcony or laundry room, Rube Goldberg a series of valves, check valves (affecting the building's water supply)and pumps that may be needed. If no check valve, load the barre;; manually.
In the year 2022 what's wrong with this picture?
Possible solution: Sell the condo and see how you might be able to do better in another more upscale building. IDK...it's your money and your desire. Go for it.
PS. The water here in the DR is not that cold and hot water is bad for your skin.
My opinion ...your money.