I mainly watched the home page and it looks quite good, but i would try to make everything a bit lighter and more elegant.
The background doesn′t work so well with the greens in the pictures. Maybe try another color not toosaturated; dark green or blue, soft orange, bordeaux, even a soft grey or a white?
I would try the home page without the link icon too (back to…) or at least i would make it more minimalistic (the header fonts already do it well).
I would maybe avoid the youtube video in the main page. It′s not too proffesional and the composition would be nicer in my opinion. You can show the video option in some other place of the site.
As the slider is the first thing you watch i would take care about the pictures;
The sitting girl one doesn′t work because of her weird position, the imperfections in the grass…I would try with some architectural detail instead. The building looks nice.
The chair′s picture could be of better quality too. Try to get a nice picture of it, well focused and with enough resoultion, which shows the same scene with all the green space and the same setting.
The other pictures do work quite well :).
Now my question. I see that you are using elegantthemes but i would like to know about the home slider to try it in my site. I′ve seen it around but don′t know which one it is. I can′t figure it out with the firebug. Anyone knows?