Bus from Albufeira to monchique spa

Have a look at Cubsur's site here:

http://thomasallen.home.sapo.pt/travel/010.htm

This shows buses from Portimão to Monchique which go right by the Spa.

Look at:

http://thomasallen.home.sapo.pt/travel/002w.htm

for buses from Albufeira to Portimão.

Hope this helps.