Anastasia's place is ideally located - close to the main station and metro interchange, a 20 minute walk to the beautiful Old Town, and a 25/30 minute walk to Mestalla Stadium if you enjoy football.
The apartment is roomy and has everything you need - wifi, decent kitchen, two bathrooms - and is perfectly suited for a family of four. We stayed as three adults and it worked fine - though worth noting one bedroom is a very large double and one bedroom is a smaller shared one with two smaller singles. Anastasia and her friend Asya are uber helpful and Anastasia will usually reply instantly if you send her a message. Where she can she will bend her own rules on checking times etc to make your stay more enjoyable.
Thanks for a great holiday, Anastasia!