There will be numerous lenders to choose from but they may not be fully aware of the local property law and the language in which negotiations must be undertaken. One way of solving these problems is to use an international broker who will often appoint a local agent for you. However, you must be satisfied that the broker and the institution are reputable. Your own bank may have connections. Whilst they may not be unable to arrange a mortgage for you, they may be able to put you in contact with a sister company in the relevant country.
Embassies often keep lists of local mortgage brokers, financial advisors and solicitors.
Or if there is a local expatriate community, ask at the local club or watering hole. If you do get a recommendation, make sure you thoroughly check their credentials. Similar figures are quoted for Portugal, France, Italy and Cyprus. Additional costs such as life insurance, buildings insurance costs of maintaining the property in your absence or shared facilities such as a pool if on a development. Employer references may also be required.