I would think this unilateral decision by AIrbnb could be construed as unlawful. 

The new owner would have to evict using unlawful detainer, however I'm not sure how Corona Virus may have affected my ability to get them to leave legally, so I'm wondering if the deal is worth the hassle.

(a) For any residential unlawful detainer action that includes a cause of action under paragraph (2) of Section 1161, any defendant may, at any time between the filing of the complaint and entry of judgment, notify the court of that defendant’s desire to stipulate to the entry of an order pursuant to this section.

. ;-) Oops, this destroys your case: (you'd better hide this and not use it in your arguments)[5] The TCPA makes it “unlawful for any person within theUnited States, or any person outside the United States if therecipient is within the United States ... to use any telephonefacsimile machine, computer, or other device to send, to atelephone facsimile machine, an unsolicited advertisement[.]”"

An additional late fee gets added every 5 days until the court date is set up for Unlawful Detainer.

One woman was interested in a home and didn't bother to say she had a recent unlawful detainer. 

Now, if for some reason the tenant refused to move out, then at that point you may need to file an eviction (unlawful detainer) to remove them and recover possession of the property.

“Drug-related illegal activity” means the illegal manufacture, sale, distribution, purchase, USE, or possession with intent to manufacture, sell distribute, or USE of a controlled substance (as defined in Section 102 or the Controlled Substance Act (21 U.S.C. 8002) or possession of drug paraphernalia.2.Resident, any member of the resident’s household or guest or other person under the resident’s control shall not engage in any act intended to facilitate illegal activity, including drug-related illegal activity, on or near the said premises.3.Resident or members of the household will not permit the dwelling to be used for, or to facilitate illegal activity, including drug-related illegal activity, regardless of whether the individual engaging in such activity is a member of the household.4.Resident or members of the household will not engage in the manufacture, sale or distribution of illegal drugs at any locations, whether on or near the dwelling unit premises, or otherwise.5.Resident, any members of the resident’s household, or a guest or other person under the resident’s control shall not engage in acts of violence, or threats of violence, including but not limited to the unlawful discharge of firearms, prostitution, criminal street gang activity, intimidation, or any other breach of the housing agreement that the other wise jeopardizes the health safety or welfare of the landlord, his agents, or tenants.6.VIOLATION OF THE ABOVE PROVISIONS SHALL BE A MATERIAL VIOLATION OF THE HOUSING AGREEMENT AND GOOD CAUSE FOR TEMINATION OF TENANCY.

Then, once the X days elapses, the landlord is eligible to file an unlawful detainer action (eviction) with the courts.  

My attorney says they are having success with evictions from lease violations outside of non payments and with unlawful detainers.