Dear Viejo,
Would you please elaborate on what you mean by 'refinish'. The reason I ask is that we have only 'rattan' furniture in our home (in Costambar). Does the furniture require repair, i.e., ripped straps at the base of the legs, or do you want to change color. Feel free to PM me if you wish. We have both hired locals to 'refinish' and 'refinished' ourselves.
I'll be glad to share my experiences with you.