I swim nude whenever possible, including in hotel pools when there are no other guests present.
I have never had any problems from the hotel staff when doing this, even though the pools are usually covered by CCTV.
The two inset pictures show the CCTV camera circled in yellow and the monitor in the hotel lobby, top right.
However I do have some tan-through tangas for when other guests are present. The reason for tan-through is that they are more comfortable and dry quicker - in practice wrapping them in the pool towel while you dress leaves them dry enough to put in your pocket.
My wife kids me that for someone who prefers swimming nude. I own an awful lot of swim trunks. I have two pairs of long shorts from when that was the style and the only swimming i did required suits. I bought a shorter pair for myself to swim at textile pools and beaches more recently, and when we bought a house with a pool, my folks bought me another pair of shorter ones since i would clearly need more than one pair...
I own a lot more swimwear than I did before I started swimming naked.
In those days a pair wore out in a couple of years and were replaced. Since then I have become acutely aware of uncomfortable swimwear and as a result I am continually trying different styles and materials to find something acceptable for when I swim in textile environments.
Because they are rarely worn they never wear out with the result that I own swimwear bought over the last thirty years because I find it difficult to throw them out as they take up very little storage space.
I have made a video of all the swimsuits I own which can be viewed here with password swimsuitshow.