Martin is a great host with a marvelous apartment. The communication and check-in were fast and easy. The flat is very spacious, ideal for 2-4 people stay. Located in a "calm center" it's a 10 minutes stroll to the old town. Since it's located on the top floor, the rainy days in Riga were the coziest. Feels like you're living in a huge tent with drops drumming on a rooftop.
10/10 highly recommended.