We visited this sandwich shop when hunting for English bacon on the last day of our holiday! It was the best thing I had eaten all holiday, and reasonably priced. We ordered 2 bacon sandwiches, 2 snikers, and 3 cans of pop and came to 12 euros - which was well worth it . The guy who own the shop was English but did speak Spanish, he was very friendly and even cut the fat off my bacon.
I would definitely recommend a visit to 'the sandwich shop' if your in lanzarote.