Hi,
We recently moved to Geneva. We decided to find temporary accommodation for the first 3 months which we found on Glocals.com (a community of expats in Geneva). We visited the apartment over Skype video and we figured that even if it was crappy, it would only be for a short amount of time.

I wouldn't look for something permanent though. Best to get to know the city first and decide where to live based on your work etc ...

Even in CH, scams exist, I'd only send money in advance to a bank account (vs Westernunion . moneygram) and would demand a sub lease agreement.

So yes, it's possible, but you must use your common sense.