This account is mainly the stories my family members have shared as well as family friends. I have had one experience with this particular ghost myself, but it was pretty brief (obviously names are changed and not actual names, aside from the ghost's nickname).
The house I live in was built in the mid 50s. The house is essentially the same as the day it was finished back then. Hardwood floors, awkward shaped hallway, kitchen with the stove in the counter and the oven in the wall, and so on. The basement is half finished, the garage is built directly into the basement beneath my parents' room, then there is a sliding barn door that leads to the laundry room, which also has a half bath. There's a giant room you can access from the garage and the laundry room which has a fireplace and was originally the first owner's man cave. I'm going to call him by his actual nickname, because I actually do not know his real name. We call him Papi. Papi had a bar attached to his man cave, and said bar is also still there.
The first account I can recall of Papi was my sister's fiance. My older sister Tina moved in with her fiance, Scott. Scott was honorably discharged from the Marines after he did two tours of Afghanistan and one tour in Africa. He was blown up twice in the process, has bad hearing in one ear, PTSD, and so on and so forth. They had been living in North Carolina, but once he was discharged, they moved back here to Connecticut to find somewhere to live. My mom offered them the empty basement room to stay in while they find a house. Scott was laying in bed, playing on his xbox. The rest of us were upstairs in the kitchen and living room. Scott's account was that he saw a man walk past the door in the laundry room. He saw the man again twice that night after. And we're pretty sure it was Papi. Because it is a known fact that Papi is in the house.
Fast forward, Scott and Tina moved out and into an apartment. My oldest sister Kari moved in after she broke up with a long abusive boyfriend. So she was living in the basement room. One night, she looks up and sees a man standing in the doorway watching her. She freaked out, but wasn't afraid. She was pretty sure he was just curious.
Now, onto mine. We have a wood burning stove in the basement attached to the fireplace so that we can heat the house in the winter. (We do have oil and that heats up water that heats the house, but using the wood burning stove saves us money.) So I was downstairs putting wood on the fire. I turned to grab some more wood and looked up, Papi was standing there in the doorway watching me. He quickly disappeared after that.
He smoked a pipe, and his choice of tobacco was a fruity flavor and smelling type, which I find myself getting a face full of every now and then, sometimes inside the house, sometimes on the property. His old knife shop is actually in our back yard as well, and is collapsing. (His son (my landlord) was offered by multiple museums, including the Smithsonian, to take the shop and all the items in it, but he refused.) I do have a few blades from the shop actually in the house, my mom and I gathered them when we first moved in. I don't see Papi as being negative. I have had negative experiences, but... Generally the house I live in gives me very positive feelings. I honestly think Papi is protecting the house and my family.
Also, since my mother put Papi's favorite beer in the basement, half of a six pack of it, we have not seen him since. And, the beer has actually gone missing. We cannot find it.