This was quite a good stay in itself, but comparing the final rate of around US$ 190 (sic) with what was offered, this was a bit steep. One could compare this formula to that of a hotel: the main advantage I appreciated was having a place to myself. However, while this 'place' has a separate entrance, it is really a rather small studio, and all in all not much larger than a small to moderate hotel room. Of course, what one doesn't have is the possibility to check in 24 hours, a breakfast option or someone coming to clean.
So one has to consider the extent to which one wants such services. This became clear to me when, at some point, I'd locked myself out and needed to set up an appointment for someone to let me in and to recuperate the key, which cost an additional EUR 20. While this was relatively efficient, in a hotel this would of course not be an issue at all. Also, one should note that the apartment is not rented out directly by the owner, but a company, so that seems a bit odd within the context of this scheme.
The studio apartment itself is really not spacious at all, but clean, with convenient amenities, and any equipment one would need: a refrigerator, cooking stove, pots / pans / plates / glasses etc., cable television and even a washing machine. Shower pressure wasn't great on all days, and the shower cabin was a bit dark and small but that shouldn't deter anyone.
This would have been a solid 4 stars if not for how the company handled a relatively minor issue: that the drainage of the bathroom sink was blocked. With relevance to the first paragraphs, I was left to solve this by myself with the suggestion to buy a chemical destopper for which I would be reimbursed. As such solutions often do not work well, are ecologically harmful and tend to harm plumbing as well, for a few Euros more, I bought a mini-pump, which solved the issue probably for a long time to come. When proposing this solution (post-facto) I was told the flat manager would evaluate this.
Finally, the manager decided I would be reimbursed for the cost of only the destopper. Given (a) the fact that I was left to solve the issue, which shouldn't have been there, by myself and (b) the minimal difference in price between the pump and the destopper, I thought this was not exactly generous. I had already left the pump behind in the apartment - hopefully this will be of benefit to a next user. :)
Anyway, so these are the advantages and disadvantages which next guests could consider. Finally: location was excellent for my purposes and from the street in which the apartment is located, there is a beautiful and direct view of the iconic Eiffel Tower.