The location is perfect for a stay in Riga. There are plenty of great bars, restaurants, coffee places and supermarkets close to the flat. Walking to the old town takes about 15mins.
The cleanliness was ok, nothing to really complain about. It was just a little bit cold, we had -6° outside and the radiator was set to 21° which we felt wasn't enough to be really cozy inside. But overall it's worth it's money.