Oh goodness... found this out the hard way in San Francisco. It was either Fairnymph (who had the problem back east, IIRC her neighbors had them and they spread to her place) or me that started the thread, it was several years ago and I've not lived in a place with the problem since then. I have almost all secondhand furniture, I've gotten it from people I
know. My ordeal was only solved by throwing out almost everything I owned and quarantining the rest for a month

I got enough of a settlement out of the property management to move and replace the basics. I lived very spartan for a very long time. The apartment and my things were steam-cleaned before I packed them up for quarantine. I was going to resort to DDT.
I thought I was going nuts at first because I'd wake up covered in bites. I finally woke up in time to squish one of the little fuckers, looked it up, and there it was. I averaged 2-3 hours of sleep per night before I realized what was happening. My partner at the time wasn't getting bit at all, I was the tasty one. I thought I was going out of my mind. After I moved, I was very scared the problem would reoccur. It didn't... the next apartment had black mold instead

I put the little fucker in a baggie and figured out the problem. I gave him/her/it to the property manager with a demand to be let out of my lease and for full remediation. I got back most of what my stuff was worth and was let out of my lease without penalty from just a demand letter with, well, a dead bedbug as the enclosure. Bedbugs are really bad PR.
Please, please, please if you throw out furniture, stick a sign on it that says
WARNING: BEDBUGS so that the poor soul who picks up a free mattress doesn't also pick up an infestation. Mine came from some a-hole down the hall throwing out bedding, and resulted in a couple grand in property loss. Go to a laundromat, then wash EVERYTHING YOU OWN on the hottest hottest setting. Heat kills the sons of bitches too. Grab a pack of garbage bags, quarantine all your stuff after thoroughly washing and drying. Leave it somewhere bug-free for
a full month.
I'm not ashamed to admit that I was going nuts enough that I was about to order DDT over the internet until I realized I would be able to recoup my losses, or at least most of them, through moving and quarantine. I did love my mattress, but not enough to keep it after it was pinned with blood stains from my tossing and turning over the things. I cannot emphasize how important it is not to pass this along. DE works in some households or so they say. I wasn't chancing it, so I wrote a letter with a bedbug in a ziploc as an attachment, I also took photos of the property. I didn't get paid for my time in moving, but they did haul out the stuff I left.
Know you aren't alone in this problem, it can happen in the cleanest house or hotel (another thing to note, travelers) and it
sucks. Good luck. If you're in Portland, I can probably look up the rent board/code enforcement for you, or direct you to a laundromat near you, so shoot me a PM if you'd like (I'm in PDX right now, too).