Relaxation massage is usually a gentle style, full-body massage involving soft music. You will enjoy a long, luxurious massage which will use all kinds of techniques including long strokes, gentle kneading and rolling of skin and muscle, and perhaps some rhythmic rocking from side to side. It is a passive treatment.
You won't be stretched or manoeuvred into any yoga-like positions, as you are, for example, in Traditional Thai Massage. You just relax and float away.
This is the massage to choose if you just want to chill out, and leave the stress behind.