will 2 weeks be sufficient as I will not be able to go out to find a place for an annual lease during these 14 days.Book an airbnb for 2 weeks, there is no need to mention quarantine as that doesn't change anything beyond them not being able to come clean the apartment - you will have to do this yourself.
Edit: looked through your posts - make sure you book an airbnb that is private so that you don't have to subject hosts to quarantine as well.