Most pilots live in the Riga center, some in the Old Town,
https://www.ss.lv/en/real-estate/flats/riga/centre/
is the local website most use to find accommodation. If you deal direct with the owner it's better, if you go through an agent you have to pay them a finders fee, which can be up to one months rent. Most of the best restaraunts and night life are in the centre, so it's a great place to socialize. The bus number 22 runs to the airport every fifteen minutes, and takes around 35minutes, but can be quite crowded and very hot in the summer months.
Panorama Plaza is high rise development within ten minutes of the airport by bus, usually with lots of apartments for rent, nicknamed Baltic Tower, given the number of pilots living there. Prices are on the high side, but if a short commute is what you want it is about as good as you can get.
https://www.ss.lv/msg/en/real-estate...lns/cncdg.html
If you have a car and want to live outside the center, then the district of Marupe is good and close to the airport, I chose to live in Saliena development in Pinik, which is excellent for families but a bit remote for a single guy.
http://www.saliena.eu/properties/apartments/
With regards to International Schools, unless you are a contractor on the 737, then I doubt if your salary will stretch to the annual fees. I live close to two international schools, (with a third to be opened this year) and at home time the car parks are packed with Bentlys, Mercedes, Porshe and BMWs, education is big business in Latvia!
Someone asked about Q400 DEC Salary, PM me as I don't want to publish it here. Within the last month there has been discussions about an 80% contract, that would give you ten days off in a row every month, at the moment only four days in a row are available. This would be prefect for commuting, but it has not been decided yet, but the pilots have been told that they will all progress up a level in the salary scale this summer, which is good news.