Having rented our apartment for four years now, I have left behind the slide rule and taken to using the seat of my pants
I have always taken the view that it is better to be booked than empty, so yes, I looked at a number of listing sites advertising properties served by the same airport (Varna in our case), and used them as a starting point.
You do have to decide what is comparable and what is not; for example I decided that a location almost on the sand made up for the lack of a pool, but not so much so that I could charge a large premium. I may have undersold the apartment in this way, but I have always been happy with the occupancy rates.
This was the slowest year of the four, even though I increased the advertising net and reduced prices. In fact it is the only time I have ever had to resort to a Last-Minute offer for the last remaining ten days of the summer season.
Euroland customers account for most of our bookings nowadays, and it will be my principal concern not to price them out of the market.