Apartment is really central, you can reach everything from there by just walking a bit. (Port, Restaurants, Bars, Supermarket, Bus station, shopping street...)
It has what you need and the communication was more than excellent. Even got to practice my rusty Greek hehe.
Must add that I was in bad shape due to a cold I arrived with and got fully recovered like magic with the quiet and relaxed ambience of the apartment and the island. Would definitely stay there again when I come back to Tinos! Without cold, of course!!