I went ahead and labeled the valves to make it easier to understand.
As your pic does show, you have the hot water outlet valve and cold water inlet valves in the open position, while the cold to hot water crossover valve is closed. This is correct for how you want it to be for normal camping use.
However, if this RV is supposed to be winterized, it is not. This link explains it better:
Now, your antifreeze intake valve seems to be pointing to a line running northeast. You say this line runs into a floor. I wouldn't think that line would run to the freshwater tank instead of the line pointing north, but you may want to check both to see. As you have correctly surmised, you do want the valve handle pointing to the freshwater tank line now, and not to a possibly antifreeze intake line.
Do let us know what you find, as that is interesting and I have not seen such yet.