While the Thon Bristol has a very central location, which is of course good for seeing the sights of the city, it is a real disadvantage if you want any sleep at night.
We stayed two nights, a Saturday and a Sunday. On the Saturday, the noise of revelry from the street below went on until at least 4:30am. Roaring, shouting, screaming, yelping and howling just went on and on. Add to that what sounded like a troop of bongo drummers who really got into their stride around 4am! Admittedly it was much quieter on the Sunday and other guests in rooms facing away from the street did not seem to be disturbed as much.
The Bristol is an OK hotel overall, and it may be quiet on weekdays, but avoid at all costs at the weekend.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC