Restaurante Las Goteras is in Tejina de Isora, Not Tejina de Guia. Its about 30 mins drive, on the main road between Guia de Isora and Adeje. Taxi would be about 15 euros one way, but the food is great including the massive T bones ( Chuleton de Novillo ) in spanish. Definitely need to book first 922857056
Hope you enjoy.