I tried a place
https://blissfulmassagewarsaw.com/en/lingam-massage-warsaw/ after finding it through online reviews. I went out of curiosity, without any expectations.
Overall, the experience was calm and professional. The atmosphere was relaxed, nothing felt awkward, and everything was done in a comfortable, unhurried way.
After the first visit I realised it actually works well for stress relief. Now I go there occasionally just to switch off after work and reset mentally and physically.