General Emergencies: 112
EU citizens who hold an EHIC (European Health Insurance Card) are entitled to healthcare services just like local residents. These hospitals are more likely to have English-speaking staff: Centro Médico-Milenium Valencia Quironsalud Vithas Hospital Nueve de Octubre My Medica - International Clinic
"Valencia is very safe but, as with any other city, be careful of pickpocketing, especially at festivals. The beach area is safe with lots of police presence and lifeguards."
Travel insurance isn't mandatory, but recommended. Choose a plan that offers coverage for Covid-19 and unexpected quarantine.
*this information is taken from the official CDC website
Being up to date with routine vaccinations is all you need when traveling to Spain.
Yes.