The Canaries - to be certain of sun at that time of year. Lazarote is probably best for young family and quiet hols. I went there when each of my children was 6 mths old and had a v good time. The Farionies in Puerto Del Carmen in Lanzarote is very popular with Irish holiday makers. Its right on the beach and also between the old town and the newer part of the town. It is well run and quiet and ideal for young family.
The Spaniards will welcome an 11 month year old into their restaurants which is not what you find here!
These ones:
not the similarly named Fariones appartments which are nearby.