great place. chris and maureen are very nice. their place is great. excellent shower, great wifi, and comfy bed are always huge pros in my book for airbnb stays. chris was even accommodating when I asked for a clothes iron to iron my stuff for a wedding.
the location is super close to the tube station which is also the best tube line in all of London (fast, great distance between the few stops, runs late at night #nightTube, goes to Heathrow and Gatwick easily) and is also near some great local spots (I recommend getting a pint and some dinner at the pubs in Walthamstow Village or checking out Wild Card Brewery). Walthamstow Street Market is also right by the tube station (on your way there!) and is the longest street market in Europe, and is a great place for you to get a cheap meal any time of day, an inexpensive travel adapter, pharmacy need or supermarket, etc. It is also convenient for visitors to London to see the football (West Ham, Tottenham, Arsenal, and Leyton Orient are all less than a 10 on uber).
Only thing I would suggest different is for guests to get their own set of front door keys - currently guests need to unlock a lock box and then immediately put the key back in once you open the front door, which was an issue when returning late at night in the dark, and after a drink or two.