My wife and I stayed at Argonaut for five days (14-18 Sept 2005). This was our second hostel stay ever, and I can tell you it was an AWESOME experience. The staff are excellent. They were always friendly, more than helpful and very easy to talk to. We made our reservation online, and had no problem with that. The small kitchen has no stove, but it is so cheap to eat in Latvia, it was really no problem. The coffeemaker is nice, and there are small tables to sit at to relax.
The TV/community room was large, with comfortable couches. There was a VERY large plasma TV on the wall, and a nice selection of DVDs to watch. There is one computer with free Internet. It was very easy to check e-mail/pay bills and whatever we needed to do while away from home.
There was one day that the Internet was not working, BUT the girl at the front desk had it working by the end of the day, as she promised. (Really NOT a major problem for us, I've got better things to do than stay on the computer all day.)
The room we stayed in was a private double room. It was very clean and more than adequate for our needs. The linens were provided and the bathrooms, which were out in the hall, were clean, We always had hot water and I never had a problem getting into the bathroom, even though there were a lot of people in the hostel over the weekend. The location of the hostel is perfect, VERY easy access to Old Town and all the tramlines.
Would I stay there again? In a heartbeat. I Love RIGA, and I can't wait to go back. So much has changed since I was there in 1990. If you have any questions you can e-mail me at: firstname.lastname@example.org