Our group needed a house with 7+ bedrooms so we rented casa Borealis. The staff was very helpful and great cooks. The house itself was terribly musty. 7 of the 8 of our group came home sick and I am confident the dust and damp contributed substantially. Also, the Instituto Allende is a big wedding destination and Sat night our windows were vibrating from the dance music until 11:30 pm. Also, not being anble to flush the toilet paper was annoying. We have stayed in SM before and this was never an issue.