Great location - five minute walk to Tottenham Court Road Metro station, Oxford Street and Covent Garden. We walked nearly everywhere from the apartment its so central.
The apartment itself is small - it's basically one room with an en suite but it was perfect for what we needed and had a mini fridge, microwave and kettle.
The area is very busy - as other guest has mentioned - and was very loud until the early hours on Friday and Saturday night. Sunday night was much quieter. We read the previous reviews and brought ear plugs, and it worked wonders!
Communication with the host, Maria, was exceptional. She replied to any queries immediately. We were able to check in early when we arrived in London ( a lovely surprise) and she allowed us to keep our bags at one of their locations after checkout on the last day as our flight wasn't until the evening.
Would definitely recommend. A gem in the heart of Soho. Just be prepared for noise (like we were!).