TL;DR: Awesome rapids (class III and IV), experienced guide, a lot of fun and very safe.
Everything is nicely organized. Compared with other rafting companies you arrive in office with a regular street address, which is easy to find. There you can use an amenities, have a safety briefing, can change clothes and get wetsuits / water shoes in case if needed. Next they drive you on a van to a location where your trip will start.
A trip itself was very good - we had 2 adults and 3 kinds on a raft, plus guide - and easily / safely get through rapids. Some of them were intensive enough to grab a safety strap on a raft. But still it was a lot of fun and we feel it went a safe way.
Final nice touch - awesome photos made by one of a team mate and available without extra fee (well, maybe it was for this trip only, I do not know).
We likes this trip a lot and maybe later on we will do another one.