We had very good time in Sergey&Jelena's apartment. We could explore the beautiful Riga from the accommodation very well. Taxi (Bolt) is very cheap and fast, we used it, if we didn't want to take the nice through-parks walk to the city centre, which takes approximately a 25 min. We liked very much the walkways along the famous canal.
Enjoyed the old town, architecture, the parks, Art Museum, Jürmala excursion and so on.
The apartment is simple but lovely, clean, calm.
Ideas for improvement: the second bed could be bigger, but in our case, for our son it was OK.