I've arranged for a cleaner to come to my house next week. Having never had one before, I'm not sure what to expect from them. Realistically, in 2 and a half hours, what should I expect to be done? I'm guessing that hoovering, mopping and polishing of tables/sides is a given. Is there anything else I'm missing? I've tried finding out online but had so many different answers that it just left me more confused. I just don't want to have unrealistic expectations.