My sister and I thoroughly enjoyed staying at Pika and Topi's place. Check-in was simple, she communicated with us as to how to get into the building. Additionally, when our flights were delayed and we were going to arrive an hour after the preferred check-in time, she was understanding and accomodating.
The room is small but feels spacious. We felt there was definitely enough room for both of us. Especially since we were out in the city almost all day. We were provided all the essentials and some extra things, like plates, cups, utensils, tea, and waters. There is a fan that you can leave on during the night in the summer. The bathroom was kept very clean, and I even noticed that Topi changed out cloths and the trash for us, which we appreciated. It's quieter since it's not in the city, which was nice. Pika and Topi are very kind and helpful, and we were glad to have a few conversations with them.
As far as the location, we were worried about not being in Manhattan, but were pleasantly surprised how fast we could get there! It is a 7 ish minute walk to the subway (F train), and it is two stops to get to midtown. We enjoyed the walk to the subway, and walking on the path along the water is even better, seeing the view of the bridge and buildings on the water. Very beautiful at night. There is a grocery store on the way that is cheap enough. Also, a convenience store right across from the apartment building. We visited both a few times and they had quite a few options. Also, we felt very safe walking from the subway to the place around 11pm to midnight while staying on the main path.
We highly recommend staying on Roosevelt Island at Pika and Topi's, we had a wonderful experience. Would stay here again!