The staff at Hotel Joy were extremely friendly and accommodating. After a long flight, we very much appreciated being allowed into the room well before normal check-in time.
Our room was also very clean and comfortable.
My only complaint about the room was the shower. The water pressure and temperature control were great, but there was only a glass partition for half the shower, so water always got outside the shower, making the floor in the whole toilet area wet - a very minor complaint.
Wifi was good.
Overall, our stay at Hotel Joy was a very good pleasant one. The area right around the hotel, however, is mostly office buildings (and a few other hotels). For any shopping or food, you need to walk about 10 minutes to the ArenA area. The train station is right around the corner though.