We had a four nights family vacation in this lovely apartment. It was very spacious and well equipped for us 8 and would have been fine for 10 (except for a crowded kitchen table).
Communication beforehand was matter-of-fact and efficient. Jake was very accommodating when we needed to change the dates and flexible about the arrival time. We briefly met Ralph, one of the caretakers on sight upon arrival, who was very welcoming and ready to help. Pool timings were a little more limited than we had hoped, but of course even the option of the pool is amazing! The lounge and pool table did not exist as displayed in the pictures (the photos on airbnb and folder in the apartment could use an update).
The train stations are not less than 5, but rather a 10 minute stroll away. Still, its easy to get to the city centre and the catford area has all the restaurants, pubs and grocery shopping one could need.
The "self-catering/leave it as you found it" policy surprised us, as we hadn't experienced this on airbnb before. I thought it goes without saying, that basics are sufficiently supplied for the whole stay. Having to buy soap or toilet paper packs only to use an insignificant part of them during the stay was a little annoying (might be less of a problem if you don't travel by plane and carry-one luggage only).
A heads up about the apparently ongoing renovations in the apartment above would have been nice - what started out as a bit of noise became quite unsettling during the last days, especially as works started at 8am and lasted until 9pm. We didn't expect for them to go on on Saturday too.
Assuming that the construction works are only a temporary problem, we can highly recommend this apartment, as an affordable, yet comfortable option for large groups visiting London.