well if you start listening to replys like that your going to get a little bit misled :

3 to 3 .5 hrs give over Nick .and with a porty.
For a start a 3 seater and 2 chairs depending on numerous factors will take you around 2.5 hrs,
4 bedrooms providing you are not moving beds but moving all the other items around 1 .5hrs,
through lounge, an hour, then dining room and hall another hour so added all up 6 hrs and that is if everthing goes according to plan.
Now I know some of us could do it in a little less time but we are not having to fill and empty all the time, and I dare say some may even suggest it takes them longer, nothing wrong with that but an estimate from Nick, no way.
The question I am asking my self is have you not cleaned any of the above before ? obviously yes . so how long has it been taking you? I bet it isnt what has been suggested.
Geoff