The description is accurate. The host is available for contact and ready to help all the time.
Rooms are big and ceiling is high. The apartment is in a good location (center). One can leave a car in the backyard (as stated for extra fee) which was spacious enough and just walk to the Old Riga. We checked in a bit later than expected and so the host granted us a free parking (thanks for that little thing!).
During the hot summer days this apartment seems to be quite hot during the 2nd half of the day and so I'd suggest to plan something outside then. As stated the toilet is in the corridor (between the 1st common entrance door and two other doors to the different flats) so you may want to wear slippers going there and make sure children lock back the 2nd door to your apartment if they go there at night.
Two rooms face the street that has little traffic. However I personally cannot say it's a quiet at nights: looks like the continuous line of houses on both sides of the street creates an acoustic tunnel. Anyway my children slept fine and did not notice any noise outside. The kitchen faces the backyard and is quiet.
I believe the apartment was part of so called "communal apartments" during the Soviet times and that is a very very interesting experience nowadays for those who have never lived like that (i.e. sharing the use of the hallways, kitchen, toilets).