Thanks to Karlis and his family for the hospitality!
Karlis was always in touch and quickly responded to questions.
The apartment completely coincides with the description and photos, it has everything you need for a comfortable stay: a comfortable bed, a washing machine, a hairdryer, an iron, TV etc. The flat is located in the old building but it fully renovated.
We stayed in the apartment for 4 days. The apartment is safe for living with a small child (1 y.o.), the guys provided us with a cot and a baby chair. The old town in 20 minutes walk.
I recommended this apartment to stay in Riga!