The Mansion definitely recognizes it's close to cliche. It recognizes it probably isn't going to shake you out of your chair. But it's short and tidy for all that and about as light-hearted as a game about an amnesiac skeleton could be, and it's well-focused. You will immediately see what to do at the end, but that's because the author didn't try to do anything crazy.
You wake up unaware of who you are or were in a locked room, and you slowly make your way around spooky grounds. There's a diary filling in the past, along with a shovel for digging, a spooky portrait, and an empty suit of armor. Perhaps you've seen these before in other games. There are a few small jokes if you examine everything, which isn't arduous.
Given there are maybe six rooms, it's not hard to find the way through, and you may guess what one special-seeming item is for. (I never did figure what the hammer and nails were for!) The game's main challenge is navigating the inventory capacity of two, I assume because you have two hands and aren't very strong.
Every comp seems to have that one game that's very competent and says, hey, here's a bit of fun, take it or leave it. I'm not going to be profound, but I am well-constructed, and you're not going to get lost. The Mansion, down to its generic name, is that, and yet it was spooky enough, even as I was pretty sure of what I was supposed to be doing, and the end had just enough of a twist to make me look back in worry.