I believe I can assist you with your question. I am a life time Crown Heightser myself!
Born on Carroll Street and live currently on Union Street. My office is on Albany and Eastern Pkwy.
I agree with you about taking offensive to the "socially acceptability" of our neighborhood. That said, Crown Hts is a beautiful example of a Brownstone Brooklyn neighborhood. We are located near Prospect Park, the Museums, Eastern Pkwy and a very short ride to the city. It took a number of years but Crown Heights is now officially on the "map" of where to live in Brooklyn today.( I only wondered what took everyone so long! )
This is a reality that does not seem to be going away soon.
Major investments are being made here. The new buyers are investing in their properties and raising the rents accordingly.
When checking comparable rents in Crown Hts or other typical Brooklyn areas, you would go by apartment size vs sq footage to get an idea of what an apartment like yours would go for.
You say you live well east of Franklin Ave. Closer to Utica? If yes, the new rents in the area for at least a somewhat renovated apartment is as follows:
Studios - $1100 - $1300
One beds $1250- $1550
Two beds - $1450 - $1900 or more
Three beds $1900 - $2500 or more
The closer you live to North and West in CH the more expensive the rents.
If you live in a rent stabilized apartment you should be okay. Good luck