Several ferry operators provide services between Tallinn and Helsinki, including Tallink Silja, Viking Line, and Eckerö Line. The crossing time generally varies from 2 to 2½ hours, depending on the ferry company.

According to forum posts, all ferries depart from the same location in Tallinn but arrive at different terminals in Helsinki. For travelers interested in convenience, Viking Line is recommended as it docks at Katajanokka, which is closer to central Helsinki.

Travelers have suggested booking directly with the ferry companies to avoid higher charges that may come with third-party bookings. Using the ferry companies' apps can also provide access to discounts not available elsewhere.

The ferries offer various amenities, making the journey comfortable. Facilities on board include restaurants, cafes, and shops. Some travelers have described the ferries as more like a floating shopping center rather than just transport.

According to forum posts, travelers highly recommend exploring the Old Town of Tallinn, which offers a rich historical ambiance and numerous photo opportunities. Notable places include the Museum of Orders of Knighthood and the Great Guild Hall, which provide insights into local history and culture.

Several users suggested trying local Estonian cuisine and beverages during a visit. Recommendations include tasting Kvass, a traditional fermented beverage, and enjoying meals at restaurants near the town hall place. Maiasmokk café is also mentioned for its delicious cakes, adding a culinary delight to the day trip.

For those interested in more relaxed or scenic activities, some travelers recommend visiting Kadriorg Park for a leisurely walk. The park provides a beautiful setting and is an excellent spot for a break between visiting more crowded tourist areas.

The Seaplane Harbour Museum is frequently recommended by travelers for its engaging exhibits and interactive displays, making it a suitable visit for both adults and children looking for an educational yet entertaining experience.