Good things:
Great location, right in the middle of the old town. There were several live bands playing on Saturday night near to the apartment so it was very easy and convenient to have a nice time. The apartment is very large and could probably easily accommodate alot of people. The host is also quite fast and helpful when you ask questions through AirBnB.
Bad things:
The apartment needs alot of renovation.
Other things worth mentioning:
It's not especially convenient if you're driving into Riga because you have to park a 10 minute walk away