[quote]The setting is that of modern day?[/quote]
Ah, yes it is! I shall add that in, thank you!

[quote]I'm not sure if -> our characters know each other before they arrive at the hotel.[/quote]
Highly likely that they don't know each other, though I might make exceptions. The pairs, however, will [i]not[/i] know each other prior to their stay. So, you can perhaps be friends with one or two people, but they will not be who you are connected to.

[quote]Who will play the sins?[/quote]
Whoops, guess I didn't explain this. No one really controls them. The person they 'curse' begin to reflect their attributes, and that's pretty much their role in the RP. (Person with lust starts having uncontrollable desires, person with sloth starts getting lazy, etc.) The whole 'game' thing is but a simple explanation as to why they spontaneously decided to curse people and (try to) make them fall in love. Maybe they're all watching from the underworld. The deadly sins as a being aren't that important, just what they are associated with.

I hope that answered your questions. And, thank you for your interest! As a poll that you needn't worry about, did you want to play one character or two characters?