We really enjoyed our stay at Carlos's flat. The room is spacious with plenty of storage for luggage. Carlos also provided hangers, a map of the city and lots of great tips. Clean sheets, towels and toiletries were also provided.
The bathroom is not very large but plenty big enough for one person at a time. Carlos also left some space there for our things. We didn't really use the kitchen, but Carlos made sure we knew we were welcome to it and was even kind enough to offer us some of his home cooked meals! Every room had its own heater and was very clean. We didn't see Carlos much because of his work schedule, but when we did he was always very friendly and more than willing to help with whatever he could.
Just one thing to point out: if you are a light sleeper like me who needs total darkness, you might want to bring an eye mask, especially during summer when the sun rises before 6 am. The curtains block some of the light, and my husband who is a heavy sleeper was fine, but it would have still been a bit bright for me without the eye mask.
Other than that, Carlos is a great host and we would definitely stay here again and recommend his flat to anyone else looking for lodgings in London!