Tallinn is a great city. I found the mixture of Russian and Estonian culture very interesting. The city is a bargain for Westerners. The Estonians and Russians were very helpful and friendly. It is a safe city. Westerners don't need a visa to travel there!
Tallinn, with a bit over 400,000 people, is the capital of Estonia. It is also the main seaport for the nation and a very popular tourist destination. Tallinn is accessible by plane, bus, train, and ferry. There is also a helicopter service (Copterline) that operates from Helsinki. Inside the city there are buses, trams, and trolleys which form the public transport system.
Tallinn hostels, are the most cost-efficient of lodging options here and range upward from about 10 dollars in cost. Estonia in general is a good value destination for backpackers and other budget travelers.
The Old City is a must-see when you stay at a Tallinn hostel. Amazingly well-preserved and in good shape, it was inscribed to the UNESCO World Heritage List on 1997. You can easily spend half a day in the Old City, shopping, sightseeing, and just enjoying a warm summer day. Be prepared though, in the summertime the Old City is very crowded with tourists and travelers.
Other parts of Tallinn follow a more typical (some might say boring) building style. Freedom Square (Vabaduse Väljak) and the notorious Hotel Viru are sights worth seeing. There is also the Tallinn Zoo and some museums to see. Tallinn hostels are also near the Saku Suurhall, which is the biggest concert space in all of Estonia, and also houses a great shopping center area.
Tallinn hostels are a safe travel destination, provided you keep your common sense with you. The city is notorious for its credit card scams, and most of them take place in so-called "Gentlemen's Clubs". Some areas of the city are known to locals for being more or less prone to crime. Keep your ears open for this kind of information.