Yes clean- very clean.
OK here goes
Taipei - I found one set in transit area as I was pushed for time to connect and could not be arsed to walk to the lounge.
It is by the kids play area.
Better to ask staff who are usually helpful for directions.
It had those ever lasting rolls of large tissue paper to dry yourself on if you were short of a towel, I just did a 1km sprint around the terminal naked as the ambient temperature dried me pretty quickly.
They were clean and size was more than enough.
Macau.
Upstairs by the lounges - follow signs for toilets.
There was lady in there cleaning and she saw me looking at them and asked me if I needed a towel, I didnt as only there to take a leak and was just being curious. What I mean is I was going to take a leak in the toilets not the shower but had a look at the shower to see what it was like - dooooh - you know what I mean.
Hong Kong.
I have always uded the lounge ones but some years ago I was delayed and found one in the middle section near to where KLM and LH fly form. I am sure there are others who can clarify this for me.
I will add more when I can think of them.