First off, your host. Edgars is a lovely host, who will make sure you'll settle into the flat nicely. If you have any questions, he's more than happy to answer them - almost instantly. You might not even have any questions left, because
Edgars will provide you with tons of leaflets, maps etc. So helpful!
Secondly, the flat. It's very clean, spacious and quiet. It's also a perfect base for exploring Riga, seeing how it's within walking distance of Riga's Old Town, the train and bus stations and there are also a lot of nice restaurants & bars round the corner. Literally.