Me and my wife live in Hungary now for 4 years and we like it here (now 56 and 48 yrs respectively). I think we have to be honest, one of the main reasons is the lower cost of living (especially real estate, but also other items like utilities are often 30% to 50% cheaper then in Western Europe).
We live in a village, neighbours in general are friendly but very close contacts (especially if you do not speak Hungarian) are not likely. If you speak German and or English you will get by easily though I think.
One topic I miss on the forum are finances, perhaps sensitive, perhaps ignorance, but to me happiness, health and finances (in that order) are important. (happiness depending partially on the other 2). My jobs have been average over the last 30 years (nothing to complain though). Taxes however will eat away a big part of your income, in most countries through tiered brackets.
In my experience you can recoup a big part. (I worked in The Netherlands, Luxembourg, Netherlands again, UK, Luxembourg and now have my own Kft in Hungary).
I did not save much with my wife (enough though to go on early retirement and we live much more modest then in the past). HOWEVER we put tax-re-imbursements aside for emergencies (illness, repairs to house etc.) Over the years we got well over EUR 50 K back, just because timing was right. Meaning especially (but also others) move country (in any case officially) close to the mid of the tax year. (The last move from Luxembourg to Hungary in April (2015) gave us EUR 10 K net. But also the other moves were planned in such a way that reclaims are fine. If your employer is happy with you, he can also help accommodate you.
As for finances in Hungary, if you have a Western European employer who wants to sack you, you can also defer part of the income/compensation to future years and help both him and you.
eg All know VAT in Hungary is high, make use of it. (good for Hungary, good for you and possibly good for your ex -employer (just not good for authorities in the ex domicile (which you want to leave).
SUMMARY message, taxes you have to pay and we do, but please make use of possibilities available. Information is there (internet is great).
I realize the above is not very concrete, but all EU countries will have their own rules and opportunities. Just read the relevant sites, have the concrete interpretation and move and action at the right time. (Apologies to all who do not have the opportunity, but for working people and quite some retirees this could/will be relevant).