Good small studio for business travelers in very quiet new business office building neighborhood. Hosts are accommodating to requests-my flight got changed by a day and Zied and his team changed my reservation accordingly (a big thank you).
Space is small but comfortable for solo travelers. Hot water works really well with great water pressure (the shower was really great) and bed is pretty firm but comfortable. Pillows are a bit flat, but I just stacked the two. Note that there is minimal toiletries so bring your own. A few coffee pods were provided and no tea. No safe, no iron. Nice building and comfortable lobby area with vending machine (you can get beer from the vending machine too). Front door is entry by code.
A bit far if you're hoping to be in the old town or other sightseeing areas regularly, and public transportation (bus, the U, the S) is a good 10 minute walk that I don't recommend doing solo at night (female solo traveler at the time, and I didn't feel comfortable doing the walk after dinner one evening, so I cabbed it every night after, which adds up), as some of the paths are very dark, through a dimly lit park, next to the freeway, or in unpopulated business building areas. Also, there isn't much to eat in terms of restaurants (you can't just walk outside the building and find several restaurants/bars, you would have to walk 10-15 minutes or take public transportation and the options aren't great) and no groceries close by for a quick pit stop. You can get delivery. I don't recommend the apartment for tourists, especially international tourists, as there is no one physically there, the check-in/out is all automated on tablets, and if you're having trouble and want to ask for help on things, it's really not possible. Also, it's not the easiest to get to via public transportation from the airport: you either need to take the S and then transfer to the bus 50 and then walk 10 minutes, or if you're traveling during the summer season, there is a Lufthansa direct bus to the U nearby and then a 10 minute walk through a park and under the expressway (not fun if it's raining, as the trail gets muddy). About 60€ for taxi via FreeNow/Uber from airport, 25-30€ to get to old town.