I spent 6 weeks in the apartment. I was looking for a change of scenery and my selection criteria for this apartment were 1) close to nature - not many people, 2) good internet - as I was working remote, 3) heating and 4) close to the city. Here the outcome:
1) Location was perfect for me. Exactly what I was looking for. Leaving the house and directly entering the pine forest, then the sand dunes and finally the wild beaches. The area is beautiful but is a bit remote. I rented a bicycle to move around. There is one restaurant in walking distance but it was not open every day - usually on the weekends when there were more people in the park. Next to this restaurant, there is one small supermarket, a gourmet shop and a pharmacy. I did my shopping mostly online with Mercadona and it worked perfectly.
2) Internet was working without problems. I had regular video conferences and had no issues. I did use ethernet cable while working.
3) There is a heating in the bedroom, but not in the other rooms. Working in the living room was rather cold for me, especially in April, in May temperatures were more pleasant. There is not much sun entering the living room, which I guess is good during the hot season, however, not so in the cooler season especially if you need to sit for long periods.
4) There is a bus every 30 minutes to Valencia (takes about 20-30 minutes depending where you get out). There is also a very nice bicycle route to the city (15km one way). In general, the area is flat and very bicycle friendly. I went by bike to the surrounding places (El Palmar, El Perellonet, El Perello, El Saler) where you also find a big choice of restaurants and the beaches are more busy.