In search for the right theme (apartment rental site)

Dear,
I am busy with customizing a website for rental of apartments. http://bit.ly/2a5Nzle

At the moment I am using the MK theme. This theme hasnt got the best codes and it is hard edit the sidebar. I am looking a fresh clean coded, free, theme, which I can creat the site I want. I have simply designed it with a pen and a paper. See the image. Do you have a suggestion for a theme and how I can make the front page easily as I want?

I gave granted acces
Greets