The entrance is not visible on Nowy Swiat (the street) - and is not even labeled. I had to walk into Starbucks to ask. The entrance is L of Starbucks, through two gates, and immediately BEHIND. Once I'd identified the entrance, I was surprised to find it locked. There is no reception area for SleepWell. There are long-term guests who have keys and enter/exit as if this were just another apt building. SleepWell sends you an email before your stay - they are serious when they ask you when you anticipate arriving! This is so that someone can meet you outside and let you into the building. For me with no phone and barely any internet access, this is a huge risk. I could get some wireless on my Smartphone from Starbucks, and emailed the people at SleepWell. 25 min later someone came to let me in - they were very nice and spoke English. I loved the tiny room. Coffee maker, pleasant atmosphere, raised bed, TV, nice large bathroom/shower, toiletries provided. Although it was low enough to the back plaza that noises bothered me all night. There was no AC l - just window and a fan. Nobody works for the hotel in the apartment at night. The second time I come it will be a breeze. But the first time, it was way more stress than I was ready to deal with after long and hazardous travels alone. My success with this place hinged entirely on being able to use the internet while traveling.