Already a Bloomberg.com user?
Sign in with the same account.
In what is likely to be one of the most-watched comeback attempts in recent Silicon Valley history, Groupon's former CEO starts over with GPS-guided audio walking tours.
July 31 (Bloomberg) –- Enjoying the ultimate in luxury when you travel can also be costly. Bloomberg Ranx takes a look at five of the most expensive hotel rooms in the world. (Source: Bloomberg)