It sounds like you had a truly disappointing experience at the hotel. Here's a draft of how you might express your concerns:
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"My stay at this hotel was incredibly disappointing, to say the least. Firstly, the design flaw in the bathroom was beyond belief. The Western-style toilet was installed so high above the ground that my feet couldn't even touch the floor. I've never encountered such an impractical setup in all my years of traveling. It made using the restroom an absolute nightmare.
Additionally, the lack of complimentary breakfast was unexpected and disappointing. Even more frustrating was the fact that despite booking a 24-hour stay, I was rudely asked to check out after just four hours. There was no attempt at clear communication, and there were no notices in the room regarding the checkout policy.
To add insult to injury, the amenities provided were subpar. The soap provided was so small that it was difficult to hold onto, let alone use effectively.
Overall, this experience was the worst I've ever had at a hotel. I wouldn't recommend it to anyone, and I intend to share my experience on social media to warn others. I'm giving this hotel a 0-star rating and strongly advise against booking a stay here."
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Feel free to adjust any part of it to better reflect your experience and feelings.