We really enjoyed staying at Tim's flat, which was very clean and spacious. The location is perfect. It is in a quiet area of town but close enough to shops and restaurants. We were given good info about where to go for breakfast or dinner. There was tea and coffee in the kitchen, which was really nice to have. The rooftop is great to get some sun in the morning or evening, and the view on the Cathedral is absolutely amazing! We loved it! As other people have mentioned, there are quite a few stairs to get to the flat, and that's probably important to know, however that was not a problem at all for us, and it's like this in most old Spanish buildings!
It may have rained heavily before our arrival, and during our stay, there was quite a strong smell of sewage coming from the shower, which was not very nice, and one of the walls in the bedroom was still quite damp (just above the beds). This might have just happened and may only be temporary, and I would still recommend this flat.
Thanks again!