I welcome you to stay at my appartment during your visit to St. Petersburg. You will have your own bedroom with double bed and can share kitchen and bathrooms with me.
The appartment is about 20 walking minutes from the new stadium where the games of World Cup 2018 will be played. To reach downtown you will need 1 hour by public transportation or 30 minutes taxi (except rush hours).
Taxi from the airport will cost you approximately equivalent of 25 euro or 30 USD.