We stayed 3 nights at Rolands place and had a great time. It is very clean, quiet, and comfortable with everything you could need. It is also furnished extremely nicely with lots of thought put into the decorations.
Rolands is very nice and pointed us to places we could still eat on the first night we arrived.
The flat is well located and within easy walking distance of everything in central Riga, we would highly recommend staying there and definitely would again next time we are in Riga!