I have sort of the same problem, but no real solution. My bike is kept in the garage, however that is not connected to my house (it's in a block of other garages about 100 yards away) and that is the only place I can realistically clean it. Except there's no light in there unless I keep the garage door open and no source of water without traipsing back to the house. When I get back from a ride (especially if I'm cold and wet), I just want to lock the bike up and get back in the house ASAP and while I could go back out to clean it later in the day, I've normally got a good excuse not to by then - like eating food and watching TV in the warm!