We have left our boat in Mahon on a number of occasions on a mooring. It is only 5 minutes from the airport by taxi or there is a bus. Contact the harbour master Ribera del Puerto on +34 971 354 844 or e-mail ribera@riberadelpuerto.es
Emma who worked in the office last year speaks English. Last year it was 19.61 euros per day for a 14m yacht plus IVA. You will need to prepay by bank transfer to secure a reservation.Anyone thinking of leaving their boat there for longer than 10days should be aware that the fouling is very bad! The harbour master will run you in to the quay when you are leaving, and likewise onyour return to save leaving the dinghy on the quay,or you can use Antonio who delivers bread in the morning.
In Majorca the cheapest options are probably the Balearics Port Authority who have quays in Porto Cristo (stern to with lazylines), Soller, and Andraixt (stern to with your own anchor out, sounds scary if you are leaving the boat but the holding is excellent and you can always lay out a kedge too). You can't reserve these though and best not to tell them you are leaving the boat particularly in Andraixt. Oh, there is a pontoon in Andrait with lazylines which would suit you better assuming you are less than 12m, again run by the port authority.I have a contact in Andraixt who will keep an eye on your boat whilst you are away.