I agree with this, while certainly a novelty and a nice thing to have on a long flight it isn't exactly a great shower experience. Nothing wrong with taking the longer routing with a stop, but I wouldn't do it just for a chance at another shower. Two other things to consider - 1) They have moved EK205/206 to a 777 in the winter months (not sure when your flight is planned for) and 2) Even though the "experience" may be longer if you are sleeping or just enjoying a good movie or something, a stop in the middle of a long journey can be a real drag. While it is the same plane, you do need to disembark in MXP and end up in the lounge during the stopover.