Going DIY and self-managing this type of asset from another state may not be an easy task for such a building and neighborhood, it needs more attention (and probably capital).Try an unconventional approach.

Selling gets a tax free gain and allows you to be more liquid; keeping it allows you to have once in a lifetime cheap debt and have that leverage on an appreciating asset. 

Notice when I spoke of London STR I used the words "gain control of a property" and NOT "buy a property"???? 

It takes time and patience, but the long-term benefits are well worth it.I’ve personally gained invaluable knowledge, listings, and deals from friendships I’ve built over the years.The more people you engage with, the faster you’ll achieve your goals!

I definitely would pay attention to key macroeconomic stats such as population growth, job growth, and where companies are moving/developing.

Hence gaining real life experience property managing, even in the short term, will give you the tools to be a great asset manager.

Gaining knowledge about investor loans, like DSCR loans, can be particularly beneficial.

Many properties will need specialized attention, especially with plumbing, electrical, and historical elements. 

The seller's LLC pays capital gains tax and depreciation recapture, while the buyer's LLC uses the purchase price as the new cost basis.

@Jade Frank I agree with what @Dominic Mazzarella and others are saying here, but If you find the downside outweighs the gain and you ultimately decide to sell the property, Since the property was held for investment use it would qualify for a 1031 exchange.