The biggest advantage is location of the flat, because it's at the end of 2nd zone so you don't have to buy expensive public transport tickets for other zones. Carol is kind and chatty person. Bed was quite comfortable and we could use the kitchen.
Unfortunately there were some flaws. There was no lock in the door in our room so it wasn't very private. The room wasn't vacuumed. The shower was broken so washing long hair was very difficult almost impossible. What's more the cistern in the toilet refills very very slowly, so if somebody goes to the toilet after you he is not able to flush the water (it takes about 30-40 min to flush again). Kitchen was quite all right but Carol didn't leave any shelf in the fridge for us and there wasn't much space to put our food.
Summing up if you are looking for something quite cheap and near the centre just for sleep it's good enough but you have to realise that taking a bath or using the toilet isn't a good experience there.