You will find Ontinyent right in between Alicante and Valencia so you can benefit from both Airports. Ontinyent is a medievel city with spectacular nature. Some things that you may not miss while visiting Ontinyent:

Barrio de la Vila the medieval part of the city. Where you find a lot of coulored houses.  

Palau de la Vila used to be the home of King Jaime.

Musei del Téxtil Valencià back in the days Ontinyent took a very important part in the textil industry in Spain. So it is definitely worth it to visit the museum. Even better news is that it is for free.

Museo Gegant I Cabets every August Los Moros y Cristianos are celebrated in Ontinyent. During this celebration they use some giant puppets, which you can see in this museum.

Pou Clar can be found just outside of Ontinyent. Here you can go for a nice walk or a dip in one of the waters.