Valda is a great host and reacts very quickly if you habe questions. The Apartment is compact but offers all you need for a short stay. I was 10 days there for instance. The apartment is quite central. There are parks and public sport facilities like a huge skatepark with playground just around the corner.
The trainstop 'Zemitāni' is just a 10 min walk and you get for only 90 cent to the beach (Večaķi) or Riga Central.