Carlos is a superhost, without any doubt. We got there before the checkin time and he let us keep the bags in the apartment so we could visit the city without worrying about them. He also gave us some tips, asked us if we needed anything, if we know what to visit and he told us he would be on whatsapp if we needed anything.
Also, on the way out, we asked if we could leave the bags for a little while longer and there was no problems or worries. We even got to talk a little bit before we left.
I recommend this apartment for anyone who wishes to visit London. Carlos is super friendly, the location is perfect (central line) and there are a lot of cafes, supermarkets, restaurants, etc near the apartment.
PS: Even the dog is super friendly, the most friendly chihuahua I've ever seen. :)