My daughter & I loved Shinjuku Treehouse overall. For background, we aren't really party people and wanted a comfortable 'home-base' in Tokyo whilst we visited.
Pros:
- Cool place. Good mix of Japanese & Western style.
- Pretty spacious for Tokyo accommodation. Especially for the price. Full kitchen & bathroom.
- Yasu is a pleasure to deal with.
- In Shinjuku so it's close to all the action & most places you'll want to go.
- Lots of cool food places, stores & bars around.
- Well equipped.
Cons:
- The place was tidy but it could be cleaner. Bathroom smells a bit mouldy. I understand it's hard to maintain bathrooms in Tokyo though.
- Above a restaurant & close to a main road so fair bit of noise.