We had a nice week at Toby's place. This was our first stay booked through Air BNB--we hail from the US and took a flier on Air BNB for a week-long stay in London. We enjoyed the location in the central London just up from Covent Garden--and within 10-15 minute walk of Trafalgar, Piccadillly, the British Museum, multiple theaters, the Thames--and within 3-4 blocks of a min-Saintsbury grocery store for milk and essentials. Toby was very responsive on getting the flat keys--even arranging to leave the keys at a local shop when a last-minute issue came up with the building manager. We were in regular communication with Toby on WhatsApp before leaving the US and on the Tube ride in from Heathrow. From Heathrow, the Piccadilly Line runs direct to Covent Garden Tube station and requires no train changes--Toby's place is only a five-minute walk east of the Covent Garden station. (Be prepared to carry your luggage up several steps after leaving the station platform--you'll then need to take an elevator to street level.).
Toby's apartment was as advertised in the Air BNB posting--nice wood floors, glass table, functional kitchen (though we did little actual cooking except to hear water, cut a baguette and fruit, and eat breakfast cereal0. The couch is a little sinky and not all that comfortable, but we weren't "home" that much to notice until we watched the Brexit debate two nights before the vote. For us, the place was perfect size for two (though our son stayed with us for a night before we dropped him at his LSE dorm for the summer). We'd stay there again.
It may sound like an Air BNB commercial, but we did feel that we were living in London for a week--and not staying.