Overall, I had a pleasant stay at Paola's apartment.
The Positives:
-Beautiful view of the cathedral from the balcony, and music through the day from street musicians. The sunset from the apartment is gorgeous.
-Recently renovated apartment - everything is in working order.
-Central location - easy to walk places.
-Comfortable bed.
-Very clean.
The Negatives:
-The area is VERY tourism-focused. Restaurants are overpriced and you don't get a good sense of what the "real" city is like unless you go into other parts of Valencia. (If you really like the "tourism" aspect of traveling, this would be a good place for you.)
-The apartment is very hotel-like. For instance, most Airbnbs usually have basic kitchen supplies like oil, spices, etc, and have a feeling of being "lived-in." It's clear this is not someone's home, but rather a place that is rented exclusively to travelers.
-No street parking, and the nearest parking lot is 22 euro per day.
It's worth noting that when I accidentally locked myself out of the apartment, I was unable to reach Paola until the next morning, when she let me in. It was my fault that I locked myself out, but would recommend asking her for two sets of keys, as it's easy to leave the keys in the wall when you leave (you need to put them into a slot in order to turn the lights on).