The hotel is clean. The staff are friendly. But if the pool and terrace are important selling points for you, call ahead and verify they are actually open to guests. I called and asked "do you have a pool and terrace on site?" and the answer was "Yes, we have a pool and terrace." Which is true. And while they did have a pool and terrace, I learned upon arrival that they were not open for guests due to COVID. This would have been helpful to know when I called. Parking is also not free. for three days and two nights, the parking was 30€.
There is a bus that takes you into the altstaadt every 30 minutes, and public transportation is free.
Room service is also out of the question. There was nothing open after 10pm on Saturday night, and I called the front desk to request a sandwich - or anything they had available - but was told they did not have room service.
The next time I visit Luxembourg City, I will stay closer to the altstaadt. It was a 40 minute walk from this hotel.
A nice, clean hotel with friendly staff, but plan ahead and bring food to your room.