My husband and I are planning to walk from Lisbon to Santiago late September/October. Is it possible to hire bikes for only a couple of days as we were thinking we may try to cycle between Coimbra and Porto. Looking for advice about whether this stage is a good one to cycle? How difficult? Does anyone know a bike hire company that would allow us to do only a few days? I would really appreciate any advice or thoughts. Thanks in advance! Lesley