Nashville has gotten so expensive! If you are fortunate enough to grab nights at Lisa's place, you will be in a super location at a great price. If you are attending a conference at the Music City Center - perfect. I walked back and forth, no problem. I was there for WordCamp US (the international WordPress developers conference). You can walk to Honky Tonk area (Broadway) as well.
Tap water is fine for drinking, don't waste your money on bottled water.
Bed was very comfortable. I worked at the dining room table. Internet speed was just fine.
Bring your sign-in information for Netflx, Amazon and Hulu if you have such to watch your shows on Lisa's large TV in her comfy living room (there is also some free entertainment as well) - though I suspect this isn't how you'll be spending your time in Nashville.