Keep in mind, that we do not hear with the ears, but with the brain.100%. Room modes at 105, 120 and 140. Creates a gigantic mess with the fundamentals and the harmonics. Mid bass was a mess. Takes many, many very thick traps to get it under control and even then, still not even close to where I'd like it.
Glady our brain eliminates most of the physical anomalies, reflections, cancellations, modes, comb filtering, otherwise, if we would hear with the ears like a mic, we would become insane.
Contrary to our hearing, measurements show all the anomalies, even if we do not hear them and therefore can be extremely misleading, if they are not interpreted correctly. It is imperative to choose a graphical representation, that reflects what we hear (for example 1/3 octave resolution/smoothing to judge spectral balances).