I am a Spanish A level student and for our literature coursework we are in the middle of erading "La Casa de Barnarda Alba" (or in English "The House of Bernarda Alba"). I can only really comment on the one particular play but from what i've read that has been written by Lorca I want to read more!
This play is fenomenal! It's immense! It takes you in to the seedy underworld of Spanish society in the time of Lorca!
At the time the play was very controversial as it highlights much of what was wrong with the Spanish society that Lorca lived in. There's lying, rape, jealousy, social hierachy, oppression of women, unfaithful fiancees...it's all in here and that's only from the first two acts!
If La Casa is any thing to go by, the rest of these three plays will be fantastic!