Got the game last year, but was too busy so was able to play this quest just this week.

Was so genuinely angry to find the dead bodies in the basement... Legendary explorer Dagwood and the kindly old woman! Noohhh!!!

What made it worse: The ghouls' thanking Roy (not me) for allowing them to live in the tower, Roy's girlfriend's "they deserved it" retort, and finally Roy's attitude at me when I confronted him with the "bloodbath" downstairs... me, the guy who made it possible for him and his ilk to live there amongst my new "friends"....

Got so pissed, I whipped out my magnum, shot him in the head (manually, without using VATS), hunted down his girlfriend, shot her in the head, then went down and shot every ghoul I saw, including that backstabbing Michael (threw a couple of grenades his way while he was hiding out in his store).

Was so genuinely disturbed that I surfed the net regarding this quest and stumbled upon this blog.

I'm now replaying that quest. My solution: get the side quest where I am offered money for killing Tenpenny. Kill Tenpenny. Get reward. Find Roy. Kill him in his sleep. Leave the Tenpenny Tower quest unfinished.