Everything went splendid. Check-in was easy. All communication was quick and to the point.
Everything I needed was provided by the host: toothbrush, slippers, WiFi, tea, etc. the internet connection was good enough to attend online meetings with no noticeable problems.
Loads of shops, bars and restaurants in a 5-min walk radius.
The apartment is in the very centre of Riga and you can hear the street noises. Taking a nap during the daytime with windows open may be somewhat not easy. Probably earplugs or four pints of beer may cover this problem.
Check-out was a 1 minute panic as the taxi to the airport was already waiting for me but the concierge stepped out to smoke. Ended up ok.