Update
Am in this hotel currently and the walk to Dinamo is quite simple and I would say around 10mins walk..
From the hotel to metro:-
Turn left from the hotel exit, go along the road to the crossing ( Leningradsky Prospect), then turn left walk straight ( 150 mts) u get a underpass .. cross the road via it.. take the underpass exit to the left and 50 mts ahead you have the metro station on the right..
Infact it can be seen before you enter the underpass on the other side.
From the metro to hotel :
Exit the metro station.. you can see the monarch office tower on the left hand side on the opposite side of the road when your back is towards the exit.. left side 45 degrees..
Come to the main road footpath, continue 50mts to the underpass, cross the same , exit on the left and then continue onwards for another 150 mts before taking a right turn on the big road.. 100 mts ahead you have the hotel on the right..
Am surprised Google maps misses this underpass..
( note : multiple ways to reach metro stop, I gave the one I took which seems to be the quickest)