Used Sak's place as a base for a week in London. It's exactly as described on the listing - clean, modern, and a good size for 3 people. One bedroom, with a sofa bed in the living room, plus kitchen and bathroom. Beds were comfortable, and plenty of sheets, pillows and towels provided.
The location is great - a 2 minute walk from Highbury & Islington tube station (1 stop from King's Cross), on a nice, quiet street. No noise from traffic during the night. Plenty of food/supermarket options within walking distance, it is a very nice area.
We stayed in the middle of July, so it was quite warm in the flat at night - but you can open the windows in the evening if that's an issue. There was also a fan in the bedroom, which helped, but this is my only minor issue.
Overall - ideal for a base for any trip to London. Very convenient for travelling into the city, and in a really nice, safe area. Very pleased!