In my boyfriend’s old house, the former owners had a son who had Marfan’s Syndrome and shot himself in one of the bedrooms. I never really felt creepy or anything. Occasionally, the former owner, the father, would show up in their yard, grief-stricken. They’d have to gently ask him to leave.
And my parent’s house is over 100 years old, dating back to the time when bodies were laid out in the house for the wake, so I’m sure people have died and been kept there. I’ve never felt anything creepy there, either. I believe that if the soul goes peacefully, they don’t linger in the house.