Booked the room from Friday-Sunday. Checked in and...

Booked the room from Friday-Sunday. Checked in and was given the wrong room size. Had the front desk switch us to a king size room like Expedia guaranteed we would get. Upon trying to take a shower, noticed the shower floor was absolutely gross. Stained, molded. Called the front desk, they stated they couldn t get me another room due to being sold out and they could try to switch me in the morning. So I m expected to stay here in this dirty room because the reviews online are fake?