Building 39

Looks like they're open every day, so you don't need to worry about timing your visit around a closed day.

According to available data, this is a hostel. Hostels are usually geared toward lower-cost stays, with shared spaces and simpler room setups. They can be a practical option for short stays or tighter budgets.

Wi-Fi is available. Speed and stability can vary a lot — if you're doing serious work, having a backup is never a bad idea.