I really enjoyed staying at Jānis' place. The location in the city center is great.
It is a well furnished apartment and the bedroom was even bigger than I expected. The bathroom is rather small, however functional.
Jānis and Natalija were super nice hosts and helped me with every question I had concerning both the apartment and life in Riga.
Very good price-performance ratio.
I stayed for three months and I can recommend this place for both short and long-term stays. Only limitation: you have to be good on foot since the apartment is on the fourth floor.