Не советую! I do not advise!

The only plus of this place is the location, that's where the pluses end. There is no administration, they react extremely slowly and reluctantly to appeals, they destroy. They themselves live there in a boarding house, while they are not happy with you, for them you are not guests, you are a burden.
The rooms are dirty, they are not cleaned, the garbage is not taken out, the linen is not changed until you tell them about it. The cleaning lady works from 8 am to 3.30 pm, she works alone on all 6 floors in the Dolphin building, naturally she does not have time to really clean up the rooms.
If there are 6 floors, the elevator does not work. Wifi only at the reception. The pool is paid, free of charge only for rooms of the 1st category, there are 2 and 3 more, and anyone is allowed into the pool for money.
The beach is not landscaped properly, huge stones, it is impossible to swim, despite the fact that the neighboring beaches are small pebbles and sand under water.

The food is normal, the buffet, in principle, is varied, everything is dietary, mostly steamed. Gets bored with time.
I checked into a category 2 room at night, the bathroom was dirty, of course, the cleaning lady does not work at night, I had to wash everything myself. There was no toilet paper in the room, no soap, no glasses, nothing! The room was not locked from the inside, one was a little scared, informed the administration about this, had to be reminded every day, the lock was changed only after 4 days.
At the same time, it should be noted that I have never been abroad, so I only compare with Russian hotels, recreation centers, etc. Nowhere have I seen such dirt for this money, it's terrible.
If you want to Koktebel - choose another place to stay.