Following example:
\usepackage{multirow}
\begin{tabular}{cc|c|c|c|c|c|}
\cline{3-7}
& & \multicolumn{5}{c|}{something} \\ \cline{3-7}
& & AAA & BBB & CCC & DDD & EEE\\ \hline
\multicolumn{1}{|c|}{\multirow{3}{*}{\rotatebox[origin=c]{90}{sth}} }
& line 1 & x & x & x & x & x \\ \cline{2-7}
& line 2 & x & x & x & x & x \\ \cline{2-7}
\end{tabular}
- Why is the border on the left side missing?

- Why can I not make the columns fixed width (like
c{4cm})? this gives me an error message ' Illegal pream-token (2.0cm): `c' used.' but I am pretty sure it has worked for me like this...

