This varies according to whether the contract relates to a holiday rental or long-term. If a holiday lease is envisaged, the maximum term is 11 months, whereas long-term residential leases have a minimum term of one year (however specification of a lease as being less than one year in duration does not necessarily convert it to a holiday lease). It is important to check whether there is a penalty for early termination of the contract.
Long-term residential leases may be renewed by the tenant for up to three years, even though the landlord is not in agreement. This is known as prórroga forzosa.
Holiday lets may not be extended without the agreement of the landlord.
There are many other questions relating to deposits, insurance, pets, community rules, state of the property, additional guarantees etc, but it would be necessary to write a book to cover all possible aspects of a lease.