When you first use it, if your previous vacuum cleaner is of older technology, you think that something is not right because the sound is completely different. It cleans very well without having to pass it 5 times over the same spot, something very helpful is the duster it has on the handle after removing its hose. Very good price for the vacuum cleaner and the accessories you get.
P.S. I have had it for several months now and I was waiting to see it in the long run.

Follow up: It is sensitive to its brush due to the fact that it is spiral, it can break at an unexpected moment (cost of a new one is 20€).
Also, when the hepa gets clogged, you can tell because it starts making a very loud noise-whistling (cost of a new one is 20€)

This vacuum cleaner is incredibly impressive. I used to use old models from Miele and Siemens, which did a very good job for their time but were incredibly bulky, heavy, and noisy.
I noticed a remarkable difference with the Rowenta and it is truly unbelievable that it is sold at a price of only €138.

Positives:
-Very quiet (max 69db silent force)
-Lightweight and maneuverable. The 360-degree wheels make it easy to navigate in all difficult areas.
-Only 450 watts!
-Powerful. You can choose the power level according to the type of floor from the device and the suction level (to avoid sticking to carpets) easily from the handle to the hose. I have cats and it does an incredible job with fur and hair on carpets.
-Ergonomic handle. Very user-friendly and comfortable to use. It also has a special attachment with a brush on top, which you can use quickly instead of changing nozzles on the wand.
-Quality and attractive design.
-Telescopic hose.
-AAAA (energy consumption, performance on carpets, dust re-emission)
-Comes with very good 4.5L bags and 2 filters (one permanent, the other washable), resulting in very clean air and cost savings.
-Received 5 stars for its performance.
-A reliable German company for its small appliances.
-Easy parking. The wand connects and stands on the vacuum when it is in an upright position.
-Many accessories. It even has a special rotating brush for pet hair. It has a furniture nozzle and a long flexible one for difficult areas. It also has a parquet nozzle which is simply silent and the classic 2-in-1 nozzle for carpets and tiles, which also has wheels for easier movement on carpets.
-8.4m (11m operating radius) cable that retracts with the press of a button.
-Indicator for changing the bag.

Negatives:
-Not exactly a negative, but the hose is the classic plastic flexible one, although it seems to be of good quality. Nowadays, models like Bosch come with a fabric coating for greater durability.
-Only 2 years of warranty, while comparable German companies (Siemens/Bosch) offer 5 and 10 years of warranty on the motor, respectively.

I have it for almost a month and I am satisfied! Powerful, (almost) silent for a vacuum cleaner, plenty of accessories, I have a pet and it does a great job on its own but also the pet attachment leaves nothing behind. Value for money for me is around €140 that I bought it for. I will come back as soon as I use it on carpets.

I am very satisfied. Basically, I bought it because it is A in carpets. It cleans perfectly and the noise is not something tragic. It is definitely not silent but it doesn't make much noise. Anyway, for its price, it is very good!!!!

It is very very good. It sucks very loudly, at around 59-60 dB, which is the same noise level as two people talking. The previous one I had made a noise of 75 dB, which is the same noise level as a highway. It also doesn't burn almost anything. It has a variety of accessories that impressed me a lot. I bought it recently, so I don't know about durability, etc. It will show! Very good for its price though.

When I first put it in first gear, accustomed to the noise of the old one, I said ... there's no way this one will suck... but it still sucks the carpets with its power... and it's excessively quiet... plus, its 450 watts will now show its durability

You can clean even at night with sleeping children, it is easy to move around as it has four wheels. It does not get stuck on carpets, like other vacuums. Completely satisfied.