My husband and I stayed at David and Viv's apartment for almost 2 weeks which is located close to transport and is above their business.
Positives: cute apartment, newly renovated, washing machine, fan, and a fantastic neighbourhood with great restaurants/coffee shops/grocery stores and a train station nearby. The apartment is also serviced so a cleaner comes 1x a week to mop and 2x a week to collect rubbish. David and Viv were also very responsive to a of couple concerns we had and our check in was smooth.
Negatives: the apartment is located right next to a popular and frequently used pedestrian crossing which has a loud audible "beeping". As I work from home and was working during this trip, this was not ideal. I know this is definitely not the owner's fault but I think it's worth mentioning.
It should also be noted that there are 2 flights of stairs leading to the apartment (it's common to not have a lift in British apartments) with another apartment above, so we could very clearly hear the top guest when they arrived home (even at midnight).