The couch blocks the window.

It will also protect anything under the concrete from being damaged by moisture wicking thru the tile and concrete.I don't know what kind of tile you have, but if it is glazed you will not be able to color it. 

I think Brooklyn has some of the nicest looking residential blocks I've ever seen and would love to live there sometime.

Side note, I hope it does not reach the summary process, but this tenant is particularly combative and has also blocked my number...The verbiage on the NTQ isANY SUMS OF MONEY TENDERED TO LANDLORD OR THEIR ATTORNEY AFTER THE DATE OF THIS NOTICE SHALL BE ACCEPTED AS PAYMENT FOR USE AND OCCUPANCY AND COSTS OF EVICTION ONLY, AND SHALL NOT BE CONSIDERED ACCEPTANCE OF RENT, NOR SHALL IT PREJUDICE OR PREVENT THE LANDLORD FROM PURSUING SUCH REMEDIES, INCLUDING EVICTION, TO WHICH IT MAY BE ENTITLED AT LAW OR IN EQUITY.Best, Michael 

Are there structural problems, problems with the roof, major problems with plumbing or electrical, signs of water damage, etc.

This worked in Baltimore city because almost every block had a property in tax sale.

How many tenants are current in their rent.Other due diligenceCheck for building code complaints/violations pendingLook at rents in the area (within a couple blocks) Look at amenities, look at crime rates.

No water, and you may have lines that were frozen and damaged.

@Joe Capobianco  the regular security deposit should be used to cover any pet damage.

The old wood turns hard as iron---if it is not termite damaged, then it can turn to sawdust!