The wonderful thing about 90's computer games is that the media itself carries an uncanny horror with it, possibly due to the fact that as soon as the game boots up, you are reminded of the 90's. For those who are not old enough to have experienced TGIF sitcoms, Pogs, boybands, teased bangs, Buffy, and dialup modems firsthand, this game may appear to be some Satanic computer vomit you only read of in urban legends.
In a way, The 7th Guest is just that. It's not a game where you "just have to get over the graphics." The graphics are not as problematic as other aspects of the game. For example, the cutscenes communicate some story behind the house and all the puzzles in it, but they are so bizarre and disjointed. You finish the cutscenes and hope it was a hallucination, because otherwise that would mean that someone (or more accurately, a whole team of people) willingly unleashed this upon humanity. The gameplay is truly a product of its time: clunky.
Fortunately, the puzzles (the meat of the game) are very challenging and unique, so no matter your thinking style, there will probably be at least one that you can solve instantly, and several that will leave you scratching your head. I consulted a guide quite a bit to get through several puzzles.
TL;DR Don't do this to yourself unless you really, really like puzzles. Recommended because I really, really do.