OK, I was able to find them: Car, Butterfly and Design room. Each opens and has some simple colors, but no real "textures":

Butterfly: two-tone pink wings with dark body
Car: copper or orange with black tires, windows and spoiler
Design room: black carpet, gray bed, brown woof on chair with black ...

I've changed the "path" in ViewER-VR to my Downloads folder (where my model is). What is the default path it points to with the demo files?

After encountering many past ways of trying to view SweetHome3D models in Google Cardboard, I came across ViewER-VR which can display ojb models in 3D virtual space.

So I exported my model to *.obj, moved it through Google Drive to my phone, and opened it. The model is there and is wonderfully ...