I don't have an issue with clean-up (unless I do something silly like kick a tin of paint over). I normally make sure I have covered everything that needs to be covered before I paint and that way there is little or no clean-up to do. A bit of planning and preparation goes a long way...
There are many products on the market for this purpose and you don't need to spend a fortune on it. I use thin plastic sheeting (sold on rolls and just cut to the length you require)
http://www.screwfix.com/prods/19574/Decorating-Sundries/Decorating-Sundries/Dust...,
then I lay cotton dust sheets on top (if you don't own dust sheets then go to Ikea or somewhere and buy some double bed sheets for a couple of pounds).
If you want to you can tape the plastic sheet to the floor, along the skirting, to protect the carpet when doing the gloss work. You can buy plastic sheeting that has masking tape "built-in", which can make life much easier....
http://www.screwfix.com/prods/60171/Decorating-Sundries/Decorating-Sundries/Mask...You can use quick dry (water based) gloss etc, just not emulsion. As Hammy said the smell of oil based paint is not really an issue these days, they have "tamed" them a lot. If you read the label on some tins of paint, it will say "low odour" etc.
You can buy a cheap roller set and a cheap set of paint brushes, when you have finished painting your rooms chuck them in the bin, no clean-up required
If you are going to be painting over a few days and want to keep the brushes from drying out (to avoid having to keep washing them up) then wrap them tightly in some cling film. The same goes for the roller and tray, make sure there is a load of paint still in the tray and leave the roller in it, then cover with cling film.
Hope that helps...