"Adagio on Fontanka" is not far from Nevsky prospekt. You should go on the countable party of street Naberezhnaya r. Fontanka from Anichkov bridge to Bolshoy Drama Theater. You will pass Grafsky pereulok, then Scherbakov pereulok and will see the house Nr64 bit further. This house is yellow and has a gate between two doors with peaks. You should type on the speakerphone a numbers 11, and the manager of a hotel will open a gate. You should pass an arch and find a second left door in a yard. It is a portal to hotel. The code is 11 again.