How can I vertically stretch this table to prevent line breaks in rotated text?

Question

I've got as far as this with a table but it's obviously rather ugly as it is, especially the word "Predicted" being broken in half.

I want to "pad" the inner cells in some manner so as to allow the word "predicted" to be vertical and unbroken.

Current LaTeX code:

\usepackage{multirow}
\usepackage{makecell}
\usepackage{rotating}

\begin{table}
\centering
\begin{tabular}{llc|c|}
                                                         &                          & \multicolumn{2}{c}{Actual}  \\
                                                         &                          & \multicolumn{1}{c}{Pos} & \multicolumn{1}{c}{Neg}         \\ 
\cline{3-4}
\multicolumn{1}{c}{\multirow{2}{*}{\rotcell{Predicted}}} & \multicolumn{1}{r|}{Pos} & 6 TP                    & 3 FP                            \\ 
\cline{3-4}
\multicolumn{1}{c}{}                                     & \multicolumn{1}{r|}{Neg} & 4 FN                    & 7 TN                            \\
\cline{3-4}
\end{tabular}
\end{table}

Here's a mockup in Excel:

Answer 1

You could use the cellspace package as follows:

\documentclass{article}
\usepackage{multirow}
\usepackage{makecell}
\usepackage{rotating}

\usepackage{cellspace}

\begin{document}
\begin{table}
\setlength\cellspacetoplimit{15pt}
\setlength\cellspacebottomlimit{\cellspacetoplimit}
\centering
\begin{tabular}{llSc|Sc|}
                                                         &                          & \multicolumn{2}{c}{Actual}  \\
                                                         &                          & \multicolumn{1}{c}{Pos} & \multicolumn{1}{c}{Neg}         \\ 
\cline{3-4}
\multicolumn{1}{c}{\multirow{2}{*}{\rotcell[c]{Predicted}}} & \multicolumn{1}{r|}{Pos} & 6 TP                    & 3 FP                            \\ 
\cline{3-4}
\multicolumn{1}{c}{}                                     & \multicolumn{1}{r|}{Neg} & 4 FN                    & 7 TN                            \\
\cline{3-4}
\end{tabular}
\end{table}

\end{document}

Answer 2

Another simple option is to increase inter-row spacing by issuing \renewcommand{\arraystretch}{1.7}, for example. I also use \rotatebox from the more-common graphicx package, which I guess you would already load for including figures in your document.

\documentclass[a4paper]{article}
\usepackage{graphicx}
\usepackage{multirow}

\begin{document}

\begin{table}
\renewcommand{\arraystretch}{1.7}
\begin{tabular}{llcc}
                                           &     & \multicolumn{2}{c}{Actual}                             \\
                                           &     & Pos                        & Neg                       \\ \cline{3-4} 
\multirow{2}{*}{\rotatebox{90}{Predicted}} & Pos & \multicolumn{1}{|c|}{6 TP} & \multicolumn{1}{c|}{3 FP} \\ \cline{3-4} 
                                           & Neg & \multicolumn{1}{|c|}{4 FN} & \multicolumn{1}{c|}{7 TN} \\ \cline{3-4} 
\end{tabular}
\end{table}

\end{document}