The apartment: it is quite small even for a studio type apartment. It is located near a busy street so if you are used to sleeping with zero to none noise you won't get a quality sleep.
Bed situation: the bed is rather big but quite firm so you probably won't feel like laying in the clouds. Pillows are like pancakes - flat and not supportive. If you are going to be there alone then no problem you can just stack them together but if you are traveling with partner then it is different situation. Although if you sleep without a pillow it won't be bothersome. One more thing if you like having "activities" in bedroom be prepared for an uncomfortably loud sounds that the bed makes it seems like the whole building can hear you.
Cleanliness: although the apartment is generally clean, there are some spots where it could be cleaner such as the went in the bathroom (they were discussing) and everywhere higher then eye level such as top of the fridge and TV.
Host: Karlis is very friendly and helpful and quite interesting person in general so do not be afraid to talk to him surely you are going to find something in common to talk about.
Neighborhood: I don't know if it's just us,but we saw few "gangs" walking by and giving us a not so scuttling stares so going out at night by foot is not very relaxing.