The flat is really modern and nice. It is so smartly designed you don´t even notice that in fact it is a tiny apartment. You can even have friends over for a drink, there is enough space. The only compromise is that there is no view/you can not see the sun, but hey, this is just another reason to get out there and enjoy Barcelona when the weather is nice :)
Yakov is very nice, he prepared the flat like a pro for us and was always available, even reaching out to us to check if we are doing fine and have everything we need. Great host!