We've stayed in a lot of Days Inns around Orlando and always thought that we just hit a bad one - then we wised up. Maybe the one you are looking at is okay, but IMO there are lots of other nice, economical hotels to chose from.
I just want to clarify a bit: generally, the staff at the Days Inn was courteous. It was usually the hotel itself - run-down and noticeably dirty. Not dirty like the maid didn't clean, but old dirt. Obviously no hotel is spotless (by any means), but when you can actually see and feel the grime on the carpet and walls, ugh.
I would be interested to see what others have to say on this topic, because it has been a few years now since we tried Days Inn and maybe they've changed their ways.