1st visit: It was a bit difficult to find the pool as there are no visible signs or any street signs to indicate where the pool is. (It is on the left side of the big sport complex, ca. 50m from the street) Once there I found a very nice receptionist which quickly told me the rules of the place and also handed me over a bathing cap for no additional price.
The pool itself is a relatively small 20m or 25m lane. As there were very few visitors at that time, I could easily swim my 500m. The whole place (building and the pool) are in very good shape and very - very proper.
2nd and 3rd (unfortunately unsuccessful) visit:
Unfortunately, the opening hours during sommer holidays are very short in the evening (at 3 of the 5 working days of the week only until 5pm - and they don't let you in if you arrive less than an hour before closing. - Although this is written in the réglément on their web page (if you search for it), this is a big limitation because it is perfectly possible to arrive at 45 min before closing, do a 500m training and be out before the closing point in time. Also many people have to work until 5pm and then they already close.
So: best is probably to do your swim training over noon :-)
I still recommend this place as you can do something for your health - at a very low price in a nice atmosphere.