There are sooo many cheep local massage shop in Siem reap
but basically you got what you paid and I think massager who is working doesn't know body at all.
They r just doing for money.
But this guys learned massage in Japan and knows about which point is releasing tense
so it might be really hurts if you have tense in your body but afterwords you will feel lighter with ur shoulder or body.
I'm working with PC all day so my shoulder is so heard
but after I had Shiatsu I felt lighter and my vision was clear so I recommend his Shiatsu maassage.
Compare with local, you might feel its bit expensive but still way Cheever than I have back in japan.