I once lived in a tiny two bedroom apartment with 3 other guys for a couple years. 3 of us slept in one room and George got his own room because he snored like a chainsaw.

Not once, not twice, but 3 times we had pipes explode in the ceiling, flooding the apartment. It was upstairs, and once our stairs fell off. It was directly on a 6 lane major road and was super loud all the time. One a truck drove through our downstairs neighbors house.

I almost died once too because there were swarms of bees constantly and they decided I was a threat. I got stung like 30 times that day, many around my eyes and face. This might not be the apartment's fault but there were a SHIT TON of angry bees every summer.

Also we paid the rent by passing it through a slot in an unmarked door above an abandoned Chinese restaurant.

I have a few. I started typing one up and realized I was the bad guy in it, so here's a different one:

Got a call from a random guy on the phone one day. He tells me he's the landlord, the guy we signed the lease with is not the landlord but the manager the actual owner hired who is now stealing money. Instructs us to stop writing checks and start paying rent to him instead. He's in Dubai. I was hip to international calls and time zones and whatnot, and called him up after doing some checking, and he was very surprised that I had been able to figure out how to reach him.

We talked to some people and told him, sorry, until we have a new written agreement we're going to continue to perform the lease exactly as we signed it, sorry about your business troubles and all, if you want to vacate the existing lease or sign something new we can talk. We tried at length to get in touch with the guy we signed the lease with to get his take on this, but he was gone. There was a summons taped to the door of his office. Long story short, Dubai guy was 100% telling the truth which was extremely surprising.

Also the guy next door had tried to rig things so that we would be paying his heating bill and our heating bill both. Got that straightened out. Also the furnace, which was never all that powerful to begin with, failed completely in winter and the "landlord" (first guy, the guy who disappeared) tried to get us to pay for fixing it. Also the basement flooded with sewage, like knee-high. (Every time it rained a lot, holes in the basement wall would shoot water out like from a hose, in an arc like one of those demonstrations of laminar flow, and the drains in the basement floor were connected to the sanitary sewer, so at some point physics bubbled up an ungodly about of pure poop-water into the basement where some of our stuff was stored.) The landlord refused to have it cleaned, he said it wasn't his problem, so it basically just became the forbidden zone.

We wound up leaving anyway, because for 18 months of living there it was never once legally approved for people to be in there in the first place. Imagine that. I think what we wound up saying was, we're going to be out in 60 days (or whatever), we're not going to pay anymore and in exchange for that being okay we won't take any kind of legal action against you for past rent for this scam or notify anyone and get you in trouble. Someone came by and tried to imply to me that he was mob-connected and we better keep paying if we knew what was good for us. He was not very intimidating. I was mildly concerned, other people were scared on my behalf, I later learned he was 100% full of shit like everyone else in this story.

Good times.

Oh also one time when me and the neighbor were down looking at the furnace which wasn't working, it all of a sudden started loudly venting a huge cloud of high-pressure steam from a relief valve and my neighbor sprinted away screaming convinced it was going to explode at any moment. The guy who came to fix it was totally unfazed by stomping through the sewage residue but angry and cursing about how badly the thing was constructed and wired, I think he said it must have been done by crackheads or something, "I don't even know how someone could have done this."

I keep remembering more things about that place as I am typing lol. That's all I can really remember, I'm sure there is more.

That was barely more than a room I rented when I was a student. It was barely large enough to fit a bed and a table (and an easel, as I painted a lot), and the walls separating the 'apartments' were paper thin and I mean real thin paper: one could press with a finger and the so-called wall would bend :p

It was a pain to live there because you can imagine there was no such as privacy. But it was also great because we were all very young (save one 'old' dude... that was younger then I'm today), and being young and being forced to knew each other and live so close to one another, well, a few of us learned to knew each others a lot more and we shared a lot of good time.

So, to answer your question: that was the undisputed worst place I lived in. It was also not the worst memories ;)