Great place within fifteen minutes walk from subway station Lowery St. (line 7, about 16 mins from Times Sq). Yves' place is at the second floor (third in American English) but easy to reach with only three wide staircases!
The modern style apartment is fully equipped and has three bedrooms. Yves has his own bedroom & private bathroom at the backside. There are two bedrooms for guests who share the spotless bathroom/toilet.
I stayed in the spacious bedroom at the front with really comfy bed and AC. You can sleep with the window open - what I did the first night - but that is not recommended for light sleepers like me because of some traffic noise.
I enjoyed the balcony at the front of the house for my morning coffee (in the afternoon it was too hot because south facing and temperatures around 30 degrees celsius/86 Fahrenheit).
The great little neighborhood Sunnyside is dotted with restaurants, pubs, coffee places and shops/supermarkets and has a village atmosphere.
If you prefer to walk rather than using public transport this part of Queens is great! I walked down to Long Island City and crossed the Queensborough bridge into Manhattan several times. I also explored Greenpoint & Williamsburg (nice walk along the East River) and Bushwick by foot from Sunnyside. You can walk to multicultural Astoria as well (or take subway line N).
Although I met Yves briefly (he was very busy and left NYC for a long July 4th weekend) I can say that he came across as mellow and relaxed (perhaps because his Belgian roots hehehe). The pet sitters for Yves' American Pit Bull terrier Panda - a couple from Philly - were adorable.
In short I enjoyed my stay and would highly recommend staying at Yves' place!