We were made very welcome by Sasha via email, and in person by Zsofia. A "welcome pack" of breakfast necessities was also great.
The apartment is spacious and light, and attractively furnished.
The stairs into the apartment are quite steep, but once we were inside with our luggage, it was fine.
The apartment is very conveniently located, with a big Sainburys's only a short walk away, and the Piccadilly line just around the corner (£2 to come by tube from Heathrow!).