Good questions.
First off, the €93 per week is shocking on a fund of €200k. I can only assume she is retiring early, has a spouses pension chosen and has locked in a guaranteed rate of increase (3% per annum perhaps).
I was also shocked that she had paid so much in over so long and was down money. I could only conclude that she ramped up contributions considerably in recent years when losses were greatest. If you'd bought property directly, you'd obviously also be sitting on a large loss versus what you'd paid in.
Another point is that much of the €200k in the pension is made up of tax relief on contributions, and probably an employer matching those gross of tax contributions. You could only have invested the after tax proceeds in direct property with no employer participation.
Also, the income on the property would be subject to your full marginal rate of tax whilst the pension builds up tax free up to retirement.
The main issue, however, is the investment return. If you want a safe retirement income (I'm talking AAA rated safe) you can expect to earn little more than 2% on your fund. If you can earn a 5-6% "safe" rental yield, why wouldn't it be tempting to invest in property?
One major issue is that the state is the major driver of private rents and it is looking to save hundreds of millions. Another issue is whether a flood of completed NAMA apartments would further dilute yields. This has nothing to do with property prices, as god knows what is factored into them already, just a rental market outlook.
If it was me and I had a choice, I'd find it very hard to stomach locking in a retirement income based on low german bond yields.