To Takamatsu Symbol Tower from Takamatsu Airport

Take the limousine bus to JR Takamatsu Station or Takamatsu Symbol Tower.
It takes about 40 minutes.
https://www.takamatsu-airport.com/access/bus/index.php

To Takamatsu Airport from Major Cities in Japan

Refer to the below for access to Takamatsu Airport from major cities in Japan.
https://www.art-takamatsu.com/en/access/

To Takamatsu Airport from Asian Hub Airports

Refer to the below for access to Takamatsu Airport from major cities in Asia.
https://www.flightsfrom.com/explorer/TAK?mapview

To Takamatsu Symbol Tower from Train Stations

• About 3 min walk from JR Takamatsu Station
• About 5 min walk from Kotoden Takamatsu-Chikko Station

Visit the website below to find a place to stay. There is a list of hotel websites available in several languages.
Takamatsu Convention & Visitors Bureau: Accommodation page

If interested, visit the following site to learn more about Takamatsu's dining options, sightseeing spots, transportation within the city, and other attractions.
Experience Takamatsu - Sense of Wonder -

In Takamatsu, you might want to try the very famous Sanuki Udon (*made from wheat flour, so beware if you have allergies).
SANUKI UDON Walk & Eat Map