I am available for yacht pre-purchase and insurance surveys in Leros. I can get there by ferry or flight and regularly work as yacht surveyor there.
Leros is a nice quiet island. There is a good marina with travelifts that can accommodate even large catamarans. The marina has a large hardstanding area for about 200 boats. There is also an excellent boatyard and marina which is doing great work. Many boats winter at Leros.
So there is no problem for haul out during the survey and also for any repairs the sellers should make.