This is very nice work. This is really energy work. As the person channels energy through your body, be sure you are in tune with the person doing this work. It also enabled my niece to not need back surgery. It is uncomfortable at best.
Some practitioners are very painful, try to find one that is tolerable.
I must admit that I disliked the few shiatsu massages I've had. On the other hand, others have really benefitted from it. I find I enjoy acupressure much more. I find it doesn't take as long as Feldenkrais or Trager. It is the most common type of massage and is very enjoyable.