Plenty of interest in my opinion, we are talking about all aspects of real estate in Corfu.
From the informations I have (need to be confirm), the cost of buying in taxes, charges, and so on is approx 10 % of the price. Inside this, 2% for the real estate agent, wich seems to me very reasonnable, compared to some others EU cuntries.
A licence for renting is not so expensive: approx 3000 euros, may be less.
Sure you need people to help you in this activity, particulary if you are not there ! But you don't need an agent ! You need someone to wellcome people at the airport, a gardener to clean the garden and pool each week, and a house keeper to clean the house frequentely, changing bedsheet, etc, etc .... This if you want to offer a high level service.
But for this, I already have a team available with nice and very reliable people, already in this activity and having a perfect understanding of what is a high level service (and honnestly, I'm very impressed by their high level of professionnalism !)
My business plan is more or less in the trail. The only problem is the house is missing. Because the asking prices don't match. They are not matching with anything: cost of construction, economy of the island, offer and demand, availibility of land plots, etc, etc, all things usualy ruling a real estate market.
Another example: we were also looking to Corsica to settle our residence. The level of asking price is the same, but the level of renting prices is much more higher (+ 30/40%), giving an interesting ROI.
Problem: we don't want to go back in France .....