The pros: Vesna was communicative, kind and helpful during our trip, even leaving little chocolates in the room for us. Checkin was simple. We appreciated having the tiny kitchenette with Nespresso machine and fridge. The table and chairs setup was nice, and the mattress was comfy.
The cons: The neighborhood lacked charm, especially compared to other locations we visited in Vienna. The building entranceway, stairs, hallways were dark, dirty, and not welcoming. The apartment was recently refinished, and while some nice touches were included, it felt rough around the edges. For example, the shower stall was painted, not tiled (and starting to peel), shower door felt flimsy, and it was hard for my taller husband to fit his legs under the sink while on the toilet. Also, the hot water heater was loud -- a tiny explosion each time it kicks on -- and needed to be manually turned on and off when the hot water stopped a few times (luckily Vesna replied very quickly with the on/off solution!)
Overall, we thought Vesna was great, but were a bit disappointed with the location and "comfort" of the apartment considering the price ($88/night, all fees included).