If a hotel was selling a bedroom and renting it back from you, at a fixed price for the next 19 years, would you be interested?
I'm slightly exaggerating, but that's effectively what you'd be doing. There are 30 odd apartments in the building, all leased to stay city. It's not like you can choose to do something else with the apartment, so the value is driven by the lease cashflow. If you ever want to cash out, you need to find a buyer interested in this kind of investment.
There have been lots of sale & leaseback deals, a lot if them here & in France went badly for investors. On top of the usual property investment risks, you're also relying on the financial position if the leaseholder.
I wouldn't be making a direct comparison to owning and renting a single property somewhere.