I totally agree 100%. I hold myself to impeccable hygiene. Always shower/brush before an appointment. If I come from work (office) or had even peed between shower and appointment, I'd excuse myself for a rinse. If offered or told to shower, always obliged. Usually I'd ask the lady to join in for some steamy foreplay.
One thing I want to add is, beware of sugar drink. I've seen a couple of ladies whom I'm sure have freshly cleaned, but their breaths had some sour tastes. In both cases, I've noticed that there was a half empty bottle of soda on the nightstand.

I expect cleanliness from the lady. I hold myself to the same standard.