In 2007, my wife was 4-5 months pregnant when we stayed at Mystique. We loved it. Though you will be farther along at 26 weeks, the number of steps does not have to be that bad. There are a good number of steps to get in and out of the hotel, but the place is so nice that you won't want to leave.

And I don't remember the steps, at least to the hotel, being particularly treacherous or difficult to manage. There were just a lot of them. (Maybe 8 stories' worth? Can't recall.) Once you're in the hotel, there are not too many steps to deal with. (Of course, the famous sunset lookout point is a distance away, and has more treacherous steps, so you may have to skip that.)