Convenient location: close to the metro and railway, near a pedestrian shopping street, you can get to the airport by bus, which stops in front of the hotel, without a transfer. Russian-speaking staff, a cozy dining room and a good breakfast. As a disadvantage: there are rooms with one toilet (in the corridor) for 2 rooms, but a washbasin in each room.
Very close to the metro, literally a 5-minute walk away. Russian-speaking staff. Breakfast in the morning. There is a stop at Berlin-Tegel airport nearby.