Boriss is a great host that is flexible about check in/out, just needs to know a little in advance to schedule around his work.
The apartment is very clean, most everything you would need is provided hardware wise. I loved that the apartment had a dryer that was built into the washing machine. There is a comfy chair and couch that are great for relaxing or watching something on the television. There is a small dining area for two next to the kitchen area that doubled for me as a work space. The chairs provided enough support without being hard and uncomfortable. The couch is long enough to almost be a second bed. I fell asleep on it one night. The bed is big and comfortable, firm for those needing extra support during the night. There are even two sets of curtains. One for diffusing the sun and view. The other for almost completely blocking light, which is great for those who don't want to wake up to the sun in their face at 5 in the morning. Two large tilt-in/open windows provide some fresh air, if needed. Outside the windows is a small children's playground. There is a big closet near the entry where you can hang your coats or other garments. As well as some other furniture if you are there for a long stay where you can store your clothes in drawers. The bathroom is very clean with an exhaust fan for those steamy showers. Water pressure is excellent, there is no hot water tank in sight. I did take a very long hot shower and did not experience any drop in temperature. The tub is long for a relaxing bath if that is your pleasure.
Location is good. The apartment is next to the Latvia Balsam brewery, though that does not effect the stay. There is a circle-K about 200 meters for any quick convenience store items or if you have a car you can fill up on fuel. There is an aptieka about 500 meters for pharmacy needs. A little further away is a shopping center. Most all needs within walking distance or you can always summon a Bolt/Yandex car to take care of your transportation needs. There are also a few public transportation spots within a quick walk.