Guesthouse Konti is clean and spacious, quite comfortable. We actually rented 2 person room in the same house, but the owner moved us into larger apartemnt for the same price "to be more comfortable" :)
It has two bedrooms, quite large and wiht big wardrobe each. beds were OK, a bitsoft for my taste but still comfortable. nights in Rijeka can be cold, so there were several extra blankets at our disposal, all new and clean.
Bathroom is large and clean with lots of light and it has oversized shower cabin.
Living room is huge, with well equipped kitchen adjoining it. There are many amenities included, like hair dryer, iron, ironing board etc. WiFi was quite good.
Konti is located on the edge of the city, close to highway and easily reachable with car, but on a rather quiet street, with great air and no noise. Parking is in the yard next door, there is space for 2 cars. Location is mixed blessing, because it is easily reachable, and quite conveniet for day trips around rijeka, but to get to the center you either need to use your own car, or take the public transportation (bus station is few minutes of walking away). If you walk around the Konti itself, there is not much of a sightseeing to have, just a peacefull residential area. however, short bus ride or 20 minutes of walk away, there is a centre of that, with an old castle and monastery, lot of bars and several restaurants...
Hosts are very helpful and friendly.
Pictures here describe place realistically. I would recommend it if you have no strong need to be in the centre of the town.