My thinking entirely @Helen3 . Many thanks for this.
'Short Term Rentals' aka how the USA offer places(?) maybe incorrect in the UK since Holiday Lets are excluded from residential accommodation law and do nor create a contract under the Rent Act 1977:
"Holiday lettings
A tenancy is excluded if it only gives the tenant the right to occupy the dwelling house for a holiday. The Rent Act 1977 gives no definition of 'holiday' but in order to cover working holidays the courts have held that it is a suspension of one's normal activities rather than a period of recreation.[12] There have been many cases of sham holiday lettings. If a tenant can prove that an agreement for a holiday let does not correspond with what both the landlord and tenant knew to be the purpose of the letting, then it will be protected."
Care has to be taken if a long term tenant sublets as the main tenure can be prejudiced. Especially relevant now with the suspension of 'Eviction'. Which may already have been lifted but which a Tenant could try to seek to apply on compassionate grounds none the less.