I traveled to Cardiff to run in the half marathon. Most hotels were requiring a two night stay, but I was only staying one night. The Avala also required two nights, but that was fine as it was still cheaper than most of the other hotels for just a single night. The guest house is in a fairly residential area and on a main thoroughfare. The center of Cardiff is a short ride away and several buses stop just outside and head into town. Honestly, I spent about 7 hours in this place. I met with friends the night before, got in, slept and was up and out at dawn. I returned 5 hours later, showered, packed and left.
The bed was comfortable and clean. The shower was also clean and had good hot water. It was not a forceful shower, but it was enough to provide a good shower. The bathroom was actually in two parts (room #8). The shower was in one and the toilet and sink were in the other. The Sink and toilet were pretty cramped, you could easily sit on the toilet and brush your teeth or just about any other sink type chore. This is what you get when you take a family home, break it up into 10 rooms and put a bathroom in each room.
Don't stay here if you expect any luxuries, but if you want a place to sleep and shower...this place is a good value.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC