Had a very nice stay. Daniela and her husband were amazing hosts. Daniela very patiently and elaborately answered all the teeny tiny queries I had. They were also very accommodating of my request to leave my luggage at their place till the evening of the check-out day, even when they had another guest coming in.
If looking for a place within your budget that's close to London is what brought you here, you might want to account for railway charges. Getting to the nearest London Underground station and then going to the heart of the city will set you back 11-12 GBP one way when you pay by card, and takes ~1 hr 15 mins.
There is no one place you can go where you have many options for food, but my understanding is that there are options for a variety of cuisines scattered around the area (Daniela has a catalog of places that deliver). The fact that their place has a fridge and microwave for your use means you can keep the leftovers and have them the next day, which is not an option some AirBnBs have.
Overall I had a nice time staying there and would wholeheartedly recommend it if the distance from the city isn't a very big point of concern.