Hi there. I've got a good sized double/twin room available in a clean and tidy home. Public transport is very convenient. Only 25 minutes to Victoria or London Bridge by tram and train. The tram stop is 100 yards away. I am in zone 5. My house is also only 19 minutes from Wimbledon by tram. If you are a night owl, trains run from Victoria to Croydon all night.
The room is bright and comfortable, with plenty of wardrobe space. It has 2 single beds, but they are the same height and can be pushed together to form a king sized double if you wish. There is plenty of room in my kitchen if you would like to cook your own meals, and there is a large Sainsbury's supermarket one tram stop away. I can also point out some great restaurants in Croydon, Wimbledon or London.
There is free wifi, clean towels and bed linen.
From Heathrow I advise catching the X26 bus straight to Croydon. It takes an hour or so but is really cheap. From Gatwick, there are several trains an hour to Croydon and they take about 20 minutes.
If you have any further questions, just ask.