The reason why I didn't give Maintenance One high marks was because there has been a lot of miscommunication with their staff. We hired them to clean our business office. Sometimes they show up late, and it's a inconvenience when I work at the office after hours. Sometimes it is hard to ask them for special requests and they forget to clean some areas. They are nice and fast, but we have had a few issues with their scheduling as well. Other than that, they are good with their cleaning work and they make our office look good.