For my husband and me, the Snug was a little too rustic for our tastes (a converted half garage) and much too narrow a room. We had to move furniture to be able to pull out and make the trundle bed up which was not a regular mattress at all, but was very thin and hard and lumpy.
It was a bit dank in smell and the house in general was too off the beaten path with the bus system difficult to navigate and the bus drivers were unsure of their own routes and if they could even drop us off at our designated spot. The trains were not running well when we were there.
I would stick to the underground system of transport for my next stay in London and find a place close to the tube.
We never met our host but she was always in contact with us if we had a question.
Cheers.