This is a house with a few housemates to share. No living room.
The guest room is at ground level and can open into the backyard through patio doors. The guest bedroom is spacious. The bathroom is spacious too. Two toilets. Very good facilities.
It is because of other housemates living in, it will be inevitable for noises and laughters when they are holding party there at weekend with friends. The common areas are the kitchen and the backyard, both are right next to the guest room.
So if guest is ok with noises, that's fine. If he prefers quiet nights, it would be advisable to ask the host beforehand. The host Christina is very helpful and friendly, and see what can be arranged.
Transportations are mainly trains and buses. It needs to walk uphill from Herne Hill station to the house, or take a short ride (3 stops) by bus from train station.
The host and housemates are young and friendly.