It's a bit away from centre, abt 20min bus trip from Bristol coach station, if u don't mind walking a bit, u could hv supermarkets in 17min walk(i haven't gone finally but I checked it up), a convenient store, two restaurants and bus to centre in 5-10min walk. U could reach most of the places in west England in 2hr drive, though I'm not driving but my fds did. The place is quite, haven't seen bad guys arround even I came back at nine in the evening still with the sun though.
You may cook, and the host would like to save water so you never need to clean your things, just need to keep the kitchen clean.
It's not very suitable for u if u love nightlife as you may disturb the host or the neighbour guest when u back late as the toilet and bathroom are so close to all the rooms which may make a great sound each time u use water. But the bus service nearby is until midnight which is cool.
If you are landing at LHR airport, u could have direct coach to Bristol while the whole journey, LHR to the host would take you 5hr including waiting and searching places. So make sure you have enough energy b4 u start this journey. U could hv some food in the airport or near coach station. There is a tesco express just behind the Bristol coach station opens after 8pm(i guess untill 11pm, not sure).
Hope my comments help u out!