My friends and I had an amazing stay in Valencia, also due to the great apartment and hospitality offered by jose luis.
The apartment was located just 10 mins away from the beach and close to malls and supermarkets, thus the location was perfect for us.
The apartment itself was super clean and equipped with everything that we needed (complete kitchen, balcony, TV..)
I think there are busses just around the corner of the apartment that will take you into the city and cuidad de ciencia as well, but since we had a car I do not know how long they take.
Jose Luis was an amazing host, eventhough he could not welcome us personally and we only met him at the checkout, he stayed in contact with us to resolve any doubts or give us recommendations.
If I return to Valencia, I would definitely stay at his apartment again.