The trip itself and guide were quite good. The tour bus is excellent: mosern and roomy (but no rest room). I would suggest less time for lunch in Sintra and perhaps adding another site to tour, or more time in Cais-Cais or Estoril (we were given only 15 minutes in the former and none in the latter). The reason I gave this only 4 stars and not 5 is that the organization has absolutely no customer service available on Sundays (not even the "Emergency phone number" answers on Sunday) -- and we needed vital info on Sunday for our Monday trip. A professional organization must provide SOME access on Sundays as well!