We had a great time in Riga, and can highly recommend this apartment. Sergey was very helpful, gave us tips and welcomed us. Very prompt check in. Location is excellent, in the old town and close to the bus station. Views from the apartment are nice, top floor looking across the old town and river.
You need to be aware it is five flights of stairs to the apartment, the last flight is quite steep. It's location means there can be loud music playing in the vicinity until 1pm.
We can recommend the apartment, and Sergey was a great host.