Unit X15 is the corner unit and it great, but any unit from X16 to X19A/B are going to be looking at the wall at the Adams Mark, unless you are on floor 18 or 19.
I agree that is why I like VIP at Wyndham. I pay attention to room positions and book the better units.
Sorry to hear about your situation, the wyndham forum has information about unit numbers at Daytona. I know they do because I posted them there. Others contribute as well for other properties. It does pay to find out more, and that more is ususally not from reservations.
On a side note, Daytona has the most stupid bunch of employees that I have ever encountered at Wyndham. I have been frustrated there more than any other Wyndham location. I have booked rooms back to back, in order to not change rooms after the first week I have asked them to place a do not move notice on the reservation, and still they assign me to a completely different room for the first week and a seperate unit the next week. Unacceptable, but it took them 3 days to fix it. I have had this happen several times but ONLY at Daytona.