Had them to the house twice, but never again. The first time it took three maids three full hours to clean what is regularly done by my usual one woman cleaning service in four hours.....and they didn't even get to two rooms due to my need to get them out of the house.
The second cleaning visit was to see if they would make good on their promise to "do the job over, offering a $20 discount for my troubles". They came, cleaned poorly and then refused to honor the discount.