I did a ten day course in Feb, but my experience was the exact opposite of the op.
I hadnt meditated in years so the long hours of sitting were very painful, one simply perseveres. The food was very good, the servers caring and all of us, and most were new to retreats and a lot new to meditation, had a positive experience. I even started to like Goenkas chanting, well like may be too strong a word, but the guy just exudes love so how can anyone find fault with him?
To be honest Iv experienced a lot more asceticism at my own hands than what I experienced at the center. Try raising three kids, working ten hours a day and renovating a house at the same time and you will know what real sleep deprivation and worry is.
I did have reservations about the method of Vipassana, in fact I still do, but I promised to give the method a three month trial. Ill decide at that time whether to stay with it or not.