tell us how many minutes it takes for the dripping to slow down and then stop, after you turn the water supply off at its source. Every condo has a valve; you don't need to turn the whole buiding's water supply off. If nothing changes, then the water is dripping from the condo above that one (if you are in a multistorey building). That can happen.
If you can get the big wet spot to dry up a bit, then when you turn the water back on, which side gets wet or damper first... Etc, and repeat several times.
In a condo, drips from one place to another is a matter for the condo association to pay attention to, take note of, and get involved in. They will never say that it is entirely YOUR business. You have other people to show this too, and their eyes are good to have too. They are always your allies even though many will not understand as much as you have managed to understand by now. Be sure no-one sends you on a wild goos chase to look for water sliding 20 or 30 feet through a subfloor before it drips down. That is rarissimo. Focus on straight above the drip, plus or minus 30 inches.
Sometimes it is hard to "see" how water is moving through walls, sliding along the paper facing of drywall inside the wall cavity, sliding past one or two studs and appearing at another location than the one you would have thought would be the right one if that were the leak. It is common enough for that to happen, though.
If worse comes to worst, turn the water off and install a valve at a strategic location (or cut into the piping and cap it shut), so you can isolate one large set of possible sources from another large set of possible sources. Your HW heater must have a valve; if not, put one in; then, turn it off and re-diagnose in a few minutes or hours.
David
p.s. Since you called it a Condo leak, I answered as if it were a condo leak. If the drip is only 100% inside your unit, then the word condo is overkill as it could have happened in any building, condo or straight ownership.