Relocating to Bulgaria: Seeking advice on tax, residency for a non-EU spouse, and family life

Hello Everybody, I'm looking at the possibility of moving to Bulgaria. I have an EU citizenship, and my wife is Serbian. I have a bunch of questions about the move and would love to hear about your experience.

1. Any weird catches to the tax system or is it as good as it looks? I'm a tech freelancer and will keep my existing clients, so I'll be coming in with foreign income and the idea of retaining most of it is very appealing.

2. Any Serbians that moved in? How is it for you ?

3. Any spouses of EU citizens who did the residency process in Bulgaria? How hard was it?

4. Is there good private healthcare? Do you have experience with giving birth in Bulgaria, and particularly with natural birth?

5. I would love to hear about international schooling options; I see that it's mostly located in Sofia. Is it high-quality education, and how much does it cost? Same for kindergartens.

6. Bureaucracy sucks everywhere, but i hear that bureaucracy can be extra challenging in Bulgaria. Anybody can shed some light on the processes of applying for residency (for EU citizens and for spouses), opening a bank account, setting up a legal company, and doing the accounting? Do you have any local lawyers/immigration firms/fixers that can help make the bureaucracy less painful?

I have alot more questions, and while i already found some answers online, hearing about personal experiences of others will be very helpful. thank you very much :)