The positive points.
First of all, it is important to recognize that to be able to enjoy a swimming pool in Rome, in the middle of August, when it is 35 degrees is an absolute pleasure. This is the main asset of this apartment, even unique.
The air conditioning is sometimes very useful to escape the hottest hours.
There is a large interior courtyard which allows you to spend your time outside rather than locked up in the small apartment.
The apartment is not in the historic center but the Bologna metro is a 12 minute walk away and then only a few minutes from all the sites to visit. This is ideal.
Antonio, who actually takes care of the guests, is available and very responsive (we needed it).

Negative points
The photos are probably several years old. The apartment has aged and does not necessarily look completely like what is shown.
The advert talks about "Luxury" but frankly we are far from it. Luxury is attention to detail, cleanliness, etc... Not only in having marble floors.
The pool is very nice but you can clearly see the wear and tear, on the loose pieces of wall or in the damaged tiles that it needs to be refreshed.
The apartment is quite small, the rooms are tiny and built in mezzanine on the main rooms by reducing the height under ceiling.
The whole is rather dark, at any time of the day it is necessary to switch on the lights.
The main room is in the basement, without windows and with a persistent smell of humidity. It is larger and has a higher ceiling (which is better for our son of 1m90)
Overall, we can see that some paint work has been done, but the renovation is not complete.
We had a power failure the first day, Antonio and an electrician intervened very quickly and it was repaired in less than 2 hours.
The kitchen equipment is incomplete, there was only a small salad dish for example, no kitchen knife to cut the vegetables...
We found dirty dishes on several occasions. I understand that it's not Dénia's fault that other guests leave dirty dishes, but when you're talking about luxury, it's not acceptable.
As for the pool, contrary to the announcement, the jacuzzi and the fountain are no longer working. Moreover, on the 4th day of our stay, the water in the pool was cloudy, a sign that the filtering system is not working properly.
The terrace is covered by a canvas. It is not possible to open and close it by yourself according to the needs and the weather. It is said that it is necessary to contact the owner, which is complicated if we want to do it several times a day. Finally we leave it closed, what makes that we never see the sky and that the terrace is sometimes really suffocating.
Finally, the day before our departure, in the middle of the night, an important water leak broke out in the kitchen and the basement. We did manage to reach Antonio in the morning and he took care of it, but once again, it somewhat disrupted our stay and we were lucky it only happened on our last night.