Acropolis Ami Boutique Hotel in Athens

This was my first time in Athens. I checked into the hotel at 8 PM, unpacked my suitcase, organized my clothes in the closet, and went out for dinner. I returned around 11 PM and went straight to sleep as I had to wake up early the next morning.
Around 2 AM, I woke up feeling tingling on my arm. When I turned on the light, I discovered that the bed was infested with bed bugs. At first I didn’t even understand what they were, as I had never encountered bed bugs before, I initially thought they were small cockroaches. I went down to reception, showed them the photos, and they apologized and changed my room.
Once I compared the photos and videos online, I realized with certainty that they were bed bugs. I then checked my open suitcase and clothes and found that one had already gotten inside my bag. At that point, I went back to reception to request a refund and leave the hotel, as this is a serious infestation issue. They refused. I asked to at least change rooms and leave my luggage aside so I could sleep safely, but they also refused.
Instead, they attempted to gaslight me by claiming they were not bed bugs, or that if they were, then I must have brought them into the hotel. By then it was 3 AM, I was exhausted, and I ended up spending the night in the reception area because I no longer felt safe sleeping in any room.
The next morning, I asked them to heat-treat or air-dry my clothes and bags at 50°C to avoid taking bed bugs home with me. They agreed but never actually did it. They refused a refund, refused compensation, and did nothing to resolve the situation. They also claimed they would clean all the rooms, but when I returned later, my room was exactly as I had left it, my clothes and bags still on the bathroom floor.
I travel internationally very often, and this is by far the worst hotel experience I have ever had. I had to wash all my clothes and bags myself in boiling water and spent the following nights feeling paranoid and unable to sleep properly.
Bed bugs are a serious issue and not something to dismiss. I have already filed an official complaint and I hope the hotel is properly inspected. For anyone considering staying here, be aware that I encountered a full bed bug infestation during my stay.

This is the worst hotel we have ever stayed in. Rooms dirty, linen old and stained, pillows yellow stained. Pictures on website clearly taken many years ago. Carpet on entrance all loose a guest trip down entrance stairs. The breakfast area grubby most food on display, not refrigerated. Shower base had two cracks in it, walls in many areas all cracked, paint peeling off walls. Toilet seat in main foyer broken. Junk or rubbish stacked up in corner of foyer with broken portion to hide this. Light switches didn't work. Generally dirty filthy hotel. Do not stay here