We stumbled across this little gem by chance and thoroughly enjoyed our last evening in Lierganes there. The children's toys theme of the restaurant is unique and cheerful without being overbearing and cheesy. It's family friendly but not at all solely aimed at children. The waiters were extremely friendly and did their best to speak English, there were even English printouts of the menu available - which is a rarity even in much bigger cities in Spain.
The food was delicious - the "Los Geppetos" crepes filled with prawns are highly recommended!
The prices were extremely reasonable and after a week spent in several different cities in Spain - this was definitely one of the meals we most enjoyed!