If you are looking for a cheap accommodation in Athens we recommend you the AthenStyle – a luxury boutique hostel located in the centre of the city –very close and with nice view to the historical sights of Athens such as Acropolis, Ancien
If you plan a trip to St.Petersburg in Russia you can stay at Soul Kitchen Junior Hostel. The hostel offers high standard accommodation, unique design and location in the heart of the city, just a walk time to popular sights as Hermitage and St.Isaac's Cathedral.
If you want to visit Barcelona and you are looking for cheap accommodation Fabrizzios Teraace is a perfect place for you. The hostel is in the heart of Barcelona, just a 10 min. walk from the popular places.