The main thing to say is that the flat is lovely - spacious, modern, bright, decorated to high spec and has all the facilities you could need, including air con and a dishwasher.
The balcony is lovely, perfect for breakfast or pre dinner drinks. The location is excellent, safe, very central with a good supermarket down the street and a few more around. Plenty of cafés, bars and restaurants near by. It's also quite easy to walk to the historic buildings in the centre.
On the down side, I am a light sleeper and didn't sleep well as I didnt't like the bed or bolster pillow. Also it was quite noisy, from the building and surrounding area. The flat can get rather hot and stuffy so it was a balance between open windows and noise or air con at night.
There were refurbishments going on in the building and on the apartment next door and builders started to work at 7:30am each day , which was unfortunate.
Parking is very also difficult - one day it took 45 minutes driving around to find a space.
All in all we had a nice stay in Valencia and the flat was nice, but with a few small drawbacks.
We didn't get to meet Eduard as he had an accident but his friend did the honours and was very helpful.