I paid the hotel transfer fee and the original landlord didn't sign the contract. Can I ask not to pay the rent?

In this case, you can't ask not to pay the rent.

Transfer fee is the sum of the value of tangible assets and intangible assets paid by the transferee to the transferor, including existing equipment, surplus goods price, surplus rent, decoration fee, etc. The transfer fee that is obviously unfairly collected, the transfer fee of an invalid lease contract or the transfer fee of terminating the contract due to the landlord's breach of contract can be recovered. The contract is binding on the actions of both parties and has legal effect. If the landlord doesn't sign the contract, he can seek legal solutions, and can't unilaterally demand not to pay the rent.