Nice stylish place, amazing trip to Barcelona :) I had great communication with Jon who was amazed that I would like to book the place in my 32 pregnancy week since you have to climb quite a lot of stairs to get to the department. He even proposed to cancel the booking without a fee if I am feeling intimidated by the stairs. I decided to risk it and the stairs were actually not so bad at all. If I can climb them being almost 32 weeks pregnant several times a day after the whole day of walking and exploring the city, you can certainly do it too :-D And I am actually not that fit and sporty.
We didn't meet Jon in person, his associate Tuomo was there, check-in went very smoothly. He provided us with slippers, an electric radiator and an extra blanket, so we felt warm and cozy in the evenings and nights, since it was the end of February and sometimes it can be quite chilly after the sunset in Barcelona. We loved the view from the balcony and enjoyed some sunsets from it. Although it is quite small - you cannot comfortably sit there for a long time. The terrace would be a nice place for sunbathing during the day, even with no clothes if desired because it is secluded, but we didn't use it - there was no time and the temperature was not warm enough even though it was sunny almost every day. There was a big booklet with useful local tips, we used several of them.
The kitchen is great, with tasty coffee from Nespresso machine, a big fridge and oven (microwave as well). Sometimes we missed a dishwasher, but we didn't need it that often anyway since you can always have some tapas anytime of the day - the apartment is conveniently located near the famous Blai street (Carrer de Blai), which is packed with best local restaurants and cafes where you can try some delicious tapas/pinchos. Also TV with Netflix was quite practical.
All in all it was a very nice stay. The apartment is highly recommended for couples, and don't be afraid of the stairs! ;)