Nikita's place is spacious for 2 people, perfect for 4 people but would be a little cramped for 6 people.
It was very nicely situated in the middle of the art nouveau district, 10 minutes from the old town. The beds are big and good, the kitchen is decent although there are only two pots/pans and they don't fit together on the stove. The bathroom was perfect, I even had a bath ;).
Everything necessary was there and everything was clean.
I would recommend this place for a stay! Riga is a beautiful city as well!