Any info on Ukraine Travel agency?

Dear All!
First of all, please excuse me if I write something wrong, but I need a bit of your help and advise.

I plan to go to Ukraine for a couple of weeks (I am tired of Europe, what to see something new) and found these guys: http://www.ukrainetraveling.com. They look pretty young but they have good offers and I think about ordering a tour with their help.

Has anybody worked with them? Any information or feedback would be more than appreciated.

Thank you so much in advance,