I know of no places near me which sell pieces of wood/branches that would be hamster-appropriate. The only thing I can think of is maybe a pet shop that would sell driftwood for fish tanks but I don't know if that's even made of real wood. If and when I get the branch in the picture, I'll be sure to thorughly check it over for dangerous holes or grooves which would be unsafe but if there were any I would just return it.
Yeah, I thought it would be fine and since another experienced hamster owner reccomended it to me I thought it would be just fine. And I do agree it would look nice in a natural themed cage