Its a very good analogy, but not quite right. Theres no mention of interest of course, so by the time the hotelier gets the €100 back its only worth €80 so he gets in more debt to pay the traveller back the €100, so more debt without any way of actually paying for it as nothing is produced.
And thats exactly why every single economist over the past year has said the its almost guaranteed that the Greeks will default. And yet the traveller, a certain Frau Merkel, dragging her lame French poodle behind her, has carried on travelling from hotel to hotel, but not really spent her €100 on buying anything. Reports in todays paper though, suggest she maybe becoming more accepting of the fact regarding a Greek default.
The sooner the better because when it happens we will all suffer. Its because of the lack of confidence from banks, and the markets, that has held back some of the growth, and when Greece goes belly up, the trading in Europe will suffer, so it will be very tough economically for 12 months or so. But in the long term, as things re-adjust and balance out, it will be better for us all and if it had happened 12 months ago, we'd be on our way out of it, such a shame that it has been allowed to drag on and on as it has.