Voting for the location of the CIS-2107 tournament.

http://www.noviegorki.ru/rooms.html

Two-Room "Comfort"
Room accommodating up to 4 people (total of 9 rooms).
In one room: a double bed, bedside tables, wall-mounted lamps.
In the other room: a sofa bed, a table, two poufs, a telephone, a TV, and a refrigerator.
The bathroom is combined with a toilet; towels and guest amenities are provided.
Accommodation cost
1 person – 3350 rubles, 2 people – 3550 rubles, 3 people – 3750 rubles, 4 people – 3950 rubles.

In other words, the most budget-friendly option is 3950 rubles / 4 * 7 = 7k for accommodation with breakfast!!! I'm sure that Vitya can negotiate a discount for the number of people and/or for canceling breakfast, and, by cutting Merlin's expenses, we can get a conference room at a significant discount or even for free.

Therefore, the minimum total of all mandatory expenses, for example, for me:
6k for tickets + 7k for accommodation with breakfast + 3k for food
Total: 16k.

This option is even more interesting to me than the CIS conference in Yekaterinburg, as it offers the opportunity to travel.