I certainly recommend Christos' airbnb. Christos and his wife are very friendly and hospitable and help you around well in Chania. The airbnb is located close to the beach and you can also easily/quickly reach the city centre by bus. The room is clean and has all equipment necessary (except no microwave or water cooker). The only minus point for us was the shower because it sometimes floods the bathroom a bit.
I would highly recommend this nice, well located and cheap airbnb!