Actually, I think that the market has just gone into a "lull" period.
More and more, we are seeing the usual travel agents trying more and more ploys to bring the market back to them.
They realise that people are buying their own holidays online, tailor made to their own specification.
I do a bit of market research online, answering quesionnaires and I am finding more and more of the research is asking, how do you book your holidays, from whom, private, online, travel agent, etc, etc.,
I think that the private rental market has had a lull, because, more and more people are choosing to rent privately, surf the web for the tailor made holiday and this has saturated the market, so much so, that because "us" private people do not have the marketing capabilities of the giants, our properties go "unnoticed".
In time, travel agents will become obsolete and the private market will become glorious.
Well, that's my opinon, right or wrong!