We only stayed one night at RIchmond Hotel Matsumoto, but we wished we stayed longer. The staff were very professional and courteous as one would expect from Japanese hospitality.
The room was new. spacious and clean. Downstairs is a fun family restaurant with delicious western style food. There was no spa as far as I could tell, I just wasn't there long enough to find out.
It's not far from Matsumoto Castle and also the famous streets for shopping. On the other side of the block is Parco department store.
Highly recommend it and would stay again.