I think airBNB is great - have most of our Europe trip in them (Venice, Florence, Berlin, London and Paris). Actually used it for a family trip to rural Victoria. Agree look for at least 5 ratings (in the last 12mth period) or one with high ratings (the london place has over 30+) - contact the owners directly - I only book house/apartments all self contained. Once you stay they do a review on you which will assist you staying in future. My berlin place I had to be verified - Drivers Licence ect which was scanned and attached to my profile for airBNB as the home owner would only accept verified applications. I think someone who is already a member can refer you and you get a discount (will have to check this) - it was on my profile last time. So if you want it let me know via PM