Holy COW, you guys! If you love Silent Hill, I'm shocked that you haven't already got crackin' on this! WHOA it's great!
To clear things up from the rumor farm: You are NOT really "trapped" inside your room for the whole game. Technically, yes you are, but . . . not really. We'll just say your bathroom grows a portal to different places in Silent Hill, so you can "play" outside much of the game.
Specific events do take place in your room, though.
If you've never played Silent Hill I suppose you COULD start with 4, but I wouldn't suggest it because you'll miss out on all of the name-dropping from the other games and other amusing things, like the creepy bunny thing from SH3 that sits on your neighbours bed. *shudder*
It's really interesting how the mode shifts, too. For the first time ever in SH, you get to play first and third person. Of course, the game controls when you see which, but it's interesting. It makes it a bit easier to get him to look where you want him to.
Bad note: You can only carry so many items and that sucks. You'll make frequent trips back to your room to drop things off in your trunk or you'l miss out on items.
So far, so good!!! Nice creepy monsters, but three hours in and no boss monster? Disappointing!