The "rationalists" should please take into account that the OP is not one of them, meaning not only sober-objective-factual. Therefore, the respective comments don't help him at all.
My father-in-law died in the house where I also lived (however, he was ill). Although I had thought beforehand that this might burden me, it was not the case. I think most problems (subjectively) really come from the suicide (not from death itself), because to outsiders it seems so meaningless, they don't understand why. I don't have any advice; I admit it would make me uneasy too. Although it would make the matter "easier" for me if I had never known the person at all. But since there is also an alternative, I would rather keep my hands off in doubt – even if there is no rational reason for it.