The apartment is perfectly situated for a stay in Bilbao as you are close to the city centre and main attractions as well as to the old town where you will find a lot of bars and such. It is well equipped and clean. Be aware that it can be noisy at times as there is a lot of traffic at this part of town.
The communication with Monika was good but sometimes a little slow, so be patient. In my case she was able shorten my stay as requested for which I was really grateful.