We spent 6 nights at Alex's brilliant home. Everything was exactly as described.
Great water pressure (not the norm for London) in the shower.
Alex made us feel very welcome right down to the bread, milk, L'Ocittane bathroom products and prosecco he thoughtfully provided. Plus he literally had the welcome mat out for us :-)
The king size bed is comfortable with his and her reading lamps. My husband loved the TV and Netflix connection. There is a centralised music system available also.
His recommendations for local hubs were spot on.
Highgate is a lovely quiet neighbourhood in zone 3, though you may want to note it is not a level walk to tube station plus there are stairs in the block so those less active may find it a challenge especially given the August humidity.
Highly recommended.