Any tips and tricks to get more bookings?

Just be yourself and allow persistance to guide you

I would reccommend to take professional photos. 

Yes Blagoje is right, May you have not listed high end resolution photos

Invest in good photographer, advertise by yourself (I use facebook ads)

what is your property ?

We might advise you better, if we can see how/where it is listed.

I agree with the others, pictures is everything!

I can't remember when I first signed up as a host whether I described the property, area, amenities etc.  Am on another site and it allows you to ad such details which I believe help a lot but this seems to be lacking on Booking.com as I've viewed mine and partners property and basically just shows pictures, where it is (map), list of facilities an that's about it.  Doesn't seem to be a way of having own input with description.