I stayed for about a week in Mitra Youth Hostel, Auroville. The place is right next to Auroville town hall; very close to the Matrimandir. It's a clean good looking piece of architecture. Usha, the lady running the place, was also found to be friendly and helpful. Besides that, the hostel provides breakfast in weekdays. One can also enjoy a good view of the Matrimandir from the roof top. Only upsetting aspect of my experience in Mitra is frequent and long power cuts.