I had a very nice and comfortable stay at Adelaide's house. The room was clean, well equipped (water boiler, glasses, silverware, fridge, hairdryer, ...) and just like described. Adelaide is incredibly friendly and an amazing host. She arranged breakfast and juice and told me how everything works around the apartment. Even though something came up and she could not be around to welcome me personally when I arrived, she arranged her daughter to give me the keys and show me around. After that she was there very often and I was always happy to answer my questions.
From Adelaide's house to East Croydon Station is a walk of 20 minutes or a short bus ride. To West Croydon Station is about 10 minutes of walk.
From the East Croydon Station trains leave regularly to Central London, Gatwick Airport and Brighton. Very well situated for a London visit plus a day by the sea.
If there is one minor concern it is that the house is not soundproofed very well. Basically one can hear when people enter the house or have a conversation in the hallway. Not a problem for me, however good to know :-)