I have heard the same, its a large development and although I quite liked it, the fact there is no security would worry me.
Just check the license as my impression is that it doesnt have one as yet.
Pricewise I had 2 for sale there 1st floor at 120,000 each and that was nearly 2 years ago now, I would think no higher than that now for a top floor! The people you are talking to may say they are valuing higher but bank valuations are based on area size and NOT what people actually pay for them.
Just be a bit careful. Good luck